- **Eight Independent Serial Ports:** Provides 8 fully independent RS‑422/485 communication channels for simultaneous multi‑device connectivity. - **Universal PCI Interface:** Compliant with PCI Ver. 3.0/2.3/2.2 standards; supports both 32‑bit and 64‑bit PCI and PCI‑X buses at 33 MHz or 66 MHz. - **High‑Speed Communication:** Supports baud rates from 75 bps up to 921.6 Kbps per port, ensuring reliable high‑speed data transfer. - **64‑Byte Hardware FIFO:** Each port includes a 64‑byte hardware FIFO buffer, 16C750‑compatible, for efficient data handling and reduced CPU load. - **Auto RS‑422/485 Detection and Switching:** SUNIX proprietary technology automatically detects and switches between RS‑422 full‑duplex and RS‑485 half‑duplex modes without jumper or DIP switch configuration. - **AHDC/CS™ Technology:** SUNIX Auto Hardware Direction Control/Carrier Sense automatically manages RS‑485 signal direction, ensuring precise timing and collision avoidance on 2‑wire buses. - **Embedded 15 kV ESD Protection:** Integrated electrostatic discharge protection on all signal lines safeguards connected devices and ensures long‑term reliability. - **Unlimited Card Scalability:** Multiple IPC‑P2008 cards can be installed in a single system, limited only by available PCI slots. - **Software Flow Control:** Supports XON/XOFF software flow control for flexible communication management. - **Wide OS Compatibility:** Drivers available for Windows 2000/XP/2003/Vista (32‑/64‑bit), Linux 2.4/2.6, SCO OpenServer 5.06/5.07, and DOS. - **Industrial‑Grade Reliability:** Designed for continuous operation in industrial environments with operating temperature range 0 °C – 70 °C and humidity tolerance up to 95 % RH. - **Compact Form Factor:** Standard PCI card dimensions (63.5 × 120 mm) suitable for standard and low‑profile brackets. - **Long‑Term Warranty:** Backed by a 5‑year manufacturer warranty.

Manufacturer: Sunix

Category: Professional Serial

- **Eight Independent RS‑422/485 Ports:** Supports simultaneous communication across eight isolated serial channels. - **Universal PCI Interface:** Compatible with PCI Ver. 3.0 / 2.3 / 2.2, supporting both 3.3 V and 5 V signaling, and PCI‑X 33 MHz / 66 MHz operation. - **High‑Speed Data Transfer:** Baud rates from 75 bps up to 921.6 Kbps per port. - **Matrix Single‑Chip UART Controller:** 16C750‑compatible design with 64‑byte hardware FIFO for each port, ensuring low latency and high throughput. - **2.5 kV Optical Isolation:** Provides galvanic isolation for all signal and power lines, preventing ground loops and protecting against electrical noise. - **600 W Surge Protection:** Built‑in transient suppression per IEC 61000‑4‑5 standard, safeguarding connected devices from high‑energy surges. - **Embedded 15 kV ESD Protection:** Protects all signal lines from electrostatic discharge damage. - **Auto Detect & Switching Technology:** Automatically detects and switches between RS‑422 full‑duplex and RS‑485 half‑duplex modes without manual jumper configuration. - **SUNIX AHDC/CS™ Technology:** Hardware‑based automatic direction control for RS‑485 2‑wire communication, ensuring precise timing and collision avoidance. - **Software Flow Control:** Supports XON/XOFF for reliable data transmission. - **Unlimited Card Scalability:** Multiple IPC‑P2008SI cards can be installed in a single system, limited only by available PCI slots. - **Wide OS Compatibility:** Drivers available for Windows 2000/XP/2003/Vista (32/64‑bit), Linux 2.4/2.6, SCO OpenServer 5.06/5.07, and DOS. - **Industrial‑Grade Design:** Operating temperature range 0 °C – 70 °C, storage −40 °C – 85 °C, and humidity tolerance 5 % – 95 % RH. - **CE and FCC Class B Certified:** Meets international electromagnetic compatibility and safety standards. - **5‑Year Warranty:** Long‑term reliability backed by SUNIX’s industrial support program.

Manufacturer: Sunix

Category: Professional Serial

- **3‑in‑1 Serial Interface Support:** Each of the four ports can independently operate as RS‑232, RS‑422, or RS‑485, selectable automatically without jumpers. - **High‑Speed Communication:** Supports baud rates from 75 bps up to 921.6 Kbps per port. - **Matrix UART Controller:** Single‑chip ASIC design with integrated 16C750‑compatible UARTs and 64‑byte hardware FIFO for each port, ensuring low latency and high throughput. - **Auto Detect & Switching Technology:** Automatically detects and switches between RS‑422 full‑duplex and RS‑485 half‑duplex modes without manual configuration. - **AHDC/CS™ Direction Control:** SUNIX’s proprietary Auto Hardware Direction Control/Carrier Sense technology automatically manages RS‑485 signal direction, preventing data collisions and ensuring precise timing. - **Universal PCI Compatibility:** Works with both 3.3V and 5V PCI slots, including PCI‑X 33/66 MHz systems. - **Embedded ESD Protection:** 15 kV electrostatic discharge protection on all signal lines for enhanced reliability in industrial environments. - **Unlimited Scalability:** Supports installation of multiple cards in a single system (limited only by available PCI slots). - **Software Flow Control:** XON/XOFF supported for reliable data transmission. - **Plug‑and‑Play Configuration:** IRQ and I/O addresses automatically assigned by the system BIOS or operating system. - **Cross‑Platform Driver Support:** Compatible with Windows 2000/XP/2003/Vista (32/64‑bit), DOS, Linux 2.4/2.6, and SCO OpenServer 5.06/5.07. - **Industrial‑Grade Design:** Operating temperature range of 0°C to 70°C and storage range of ‑40°C to 85°C. - **Long‑Term Reliability:** Backed by a 5‑year manufacturer warranty.

Manufacturer: Sunix

Category: Professional Serial

- **Dual RS232 Ports:** Provides two independent RS232 serial communication ports per card. - **High-Speed Communication:** Supports baud rates from 50 bps up to 115,200 bps per port. - **Advanced Controller:** Built around the Moschip MCS9922 serial communication controller, ensuring compatibility and stable performance. - **PCI Express Interface:** Fully compliant with PCI Express bus architecture, offering plug-and-play installation and automatic resource allocation by the PCI BIOS. - **Memory-Mapped I/O:** Both I/O and memory mapping are automatically assigned by the PCI BIOS, simplifying configuration. - **DB9 Male Connectors:** Each port is equipped with a standard DB9 male connector for direct connection to RS232 devices. - **Industrial-Grade Design:** Engineered for industrial environments with extended temperature and humidity tolerance. - **Cross-Platform Support:** Compatible with multiple operating systems including Windows 2000, XP, Vista, Windows 7, and Linux. - **Low-Profile Option:** Optional low-profile bracket available for compact or embedded systems. - **Upgradeable Family:** Part of a modular product line allowing easy upgrade to isolated or multi-interface models (e.g., A102I, A112, A132). - **Plug & Play Configuration:** No manual IRQ or address setting required; all resources are assigned automatically by the system BIOS. - **Reliable Data Handling:** Incorporates 128-byte transmit and receive buffers per port to reduce CPU interrupts and improve throughput. - **Industrial Control Ready:** Designed for use in automation, process control, and data logging systems.

Manufacturer: Rayon

Category: RS232 2-Ports PCI

- **Dual Isolated RS‑232 Ports:** Two independent RS‑232 serial channels, each with galvanic ground isolation to prevent ground loops and electrical interference between connected devices. - **PCI Express Interface:** Fully compliant with PCIe bus architecture, supporting plug‑and‑play installation and automatic resource assignment (I/O, memory, IRQ) by the system BIOS. - **High‑Performance Controller:** Built around the Moschip MCS9922 serial communication controller, compatible with 16950A UART architecture, providing advanced buffering and flow control. - **Wide Baud Rate Range:** Each port supports programmable baud rates from 50 bps up to 115,200 bps, suitable for a wide range of serial devices. - **DB9 Male Connectors:** Standard 9‑pin male D‑sub connectors for direct connection to RS‑232 equipment. - **Ground Isolation:** Electrical isolation between ports and host system ensures reliable operation in electrically noisy or multi‑ground environments. - **Operating System Support:** Compatible with Windows 2000, XP, 2003, Vista, Windows 7, and Linux distributions (Red Hat, SUSE, Slackware, Fedora Core). - **Compact Form Factor:** Standard PCIe card dimensions with optional low‑profile bracket for small form factor PCs. - **Industrial Reliability:** Designed for continuous operation in industrial temperature and humidity ranges. - **Plug & Play Configuration:** Automatic detection and configuration by PCI BIOS; no manual jumper settings required.

Manufacturer: Rayon

Category: RS232 2-Ports PCI

- **Dual RS232 Ports:** Two independent serial ports per card, each configurable and isolated. - **Ground Isolation:** Each RS232 interface is electrically isolated to protect the host system from ground loops and electrical surges. - **ASIX MCS9865 Controller:** High-performance UART controller compatible with 16950A standard, supporting advanced buffering and high-speed data transfer. - **Configurable Baud Rate:** Each port supports baud rates from **50 bps to 230,400 bps**, suitable for a wide range of serial devices. - **Plug & Play PCI Interface:** Fully compliant with PCI specifications; I/O, memory, and IRQ resources are automatically assigned by the system BIOS. - **DIP Switch Configuration:** Each port can be individually configured using onboard DIP switches for flexible deployment. - **DB9 Male Connectors:** Standard 9-pin male connectors for direct connection to serial devices. - **Operating System Support:** Compatible with **Windows 2000, XP, Vista, 7, 8**, and **Linux** distributions. - **Industrial-Grade Design:** Designed for industrial control systems, automation, and embedded applications requiring robust serial communication. - **Low Profile Option:** Optional low-profile bracket available for compact or rack-mounted systems. - **Single Voltage Operation:** Operates on **5V PCI bus** only, ensuring stable performance in standard PCI slots. - **Ground-Isolated RS232 Interface:** Prevents electrical interference and protects the motherboard from voltage spikes. - **Wide Environmental Tolerance:** Operates in temperatures from 0°C to 55°C and humidity up to 95% RH.

Manufacturer: Rayon

Category: RS232 2-Ports PCI

- **Dual Ground-Isolated RS232 Ports:** Each of the two serial ports is independently isolated from system ground, protecting the host PC and connected devices from ground loops, surges, and electrical noise. - **ASIX MCS9865-Compatible Controller:** Utilizes the ASIX MCS9865 serial communication controller, ensuring compatibility with a wide range of operating systems and providing stable, high-speed data transfer. - **Selectable Port Configuration:** Each port can be configured individually via DIP switches, allowing flexible setup for different communication requirements. - **High-Speed Communication:** Supports baud rates from **50 bps up to 230,400 bps**, suitable for both legacy and modern serial devices. - **Plug & Play PCI Interface:** Fully compliant with PCI Plug & Play standards. I/O address, memory mapping, and IRQ assignments are automatically managed by the PCI BIOS. - **Broad OS Compatibility:** Supports **Windows 2000, XP, Vista, Windows 7/8**, and **Linux** operating systems. - **Industrial-Grade Design:** Designed for industrial control environments with robust isolation and wide environmental tolerance. - **Compact Form Factor:** Standard PCI card dimensions (100 × 97 mm) with optional low-profile bracket for compact systems. - **Single Voltage Operation:** Operates on **5V PCI bus power only**, simplifying system integration.

Manufacturer: Rayon

Category: RS232 2-Ports PCI

- **Dual RS232 Ports:** Provides two independent RS232 serial communication interfaces, each accessible via a standard DB9 male D-sub connector. - **PCI Express Interface:** Fully compliant with PCI Express (PCIe) bus architecture, ensuring high-speed data transfer and compatibility with modern motherboards. - **High-Speed Communication:** Supports data rates up to **921.6 kBd**, enabling fast and reliable serial data transmission for demanding applications. - **Advanced UART Controller:** Equipped with a **16550-compatible UART** featuring a **128-byte FIFO buffer**, minimizing CPU load and improving data handling efficiency. - **Multi-Board Support:** Allows installation of up to **four COM-8502 boards per PC**, expanding the number of available serial ports for complex systems. - **Low Power Requirement:** Operates solely on **3.3V DC power** supplied through the PCIe slot, eliminating the need for external power sources. - **Compact Form Factor:** Designed with a **PCB size of 114 mm x 104 mm**, suitable for standard PCIe slots in desktop and industrial PCs. - **Industrial Reliability:** Built with high-quality components and robust PCB design to ensure stable operation in continuous-use environments. - **Plug-and-Play Configuration:** Supports automatic resource allocation and easy driver installation for quick system integration. - **Compatibility:** Works with a wide range of operating systems and supports standard serial communication protocols.

Manufacturer: JS Automation

Category: RS232 2-Ports PCI

- **Dual RS232 Ports:** Provides two independent RS232 serial communication ports for connecting serial devices such as modems, sensors, controllers, and industrial equipment. - **Oxford 16950 Compatibility:** Each port is based on an Oxford 16950-compatible UART, ensuring stable performance, advanced buffering, and compatibility with legacy serial communication standards. - **PCI Express Interface:** Utilizes the PCI Express (PCIe) bus architecture for high-speed data transfer and efficient system resource allocation. - **Plug-and-Play Installation:** Fully plug-and-play compliant, with automatic resource assignment (I/O and IRQ) by the PCI BIOS. - **Wide OS Support:** Compatible with multiple operating systems, including Windows 2000, XP, 2003, Vista, Linux, and SCO Unix. - **Flexible Bracket Options:** Available in standard PCIe bracket (OPe952) and low-profile PCIe bracket (OPe952L) versions for compatibility with different chassis types. - **Industrial-Grade Design:** Designed for industrial control and automation environments, supporting extended operating temperature and humidity ranges. - **Memory-Mapped I/O:** Supports memory-mapped I/O addressing for efficient communication and reduced CPU overhead. - **Scalable System Integration:** Supports up to two OPe952 cards per system, allowing expansion to four RS232 ports in total. - **Upgradeable Product Line:** Compatible with related Rayon Technology products offering higher port counts and alternative interfaces (RS422/485, USB, IP-based solutions).

Manufacturer: Rayon

Category: RS232 2-Ports PCI

- **Dual RS232 Ports:** Two independent RS232 serial communication ports for connecting serial devices such as modems, terminals, or industrial controllers. - **16550A UART Compatibility:** Each port includes a 16-byte transmit and receive FIFO buffer, reducing CPU overhead and improving data throughput. - **Plug & Play PCI Interface:** Fully compliant with PCI Local Bus Specification Rev. 2.1, with automatic resource assignment (I/O address and IRQ) by the PCI BIOS. - **Shared IRQ Support:** The card supports IRQ sharing, allowing multiple PCI devices to coexist efficiently. - **High-Speed Communication:** Supports baud rates from 50 bps up to 115.2 Kbps (with 1.8432 MHz crystal) or up to 921.6 Kbps (with optional 14.7456 MHz crystal). - **Flexible Flow Control:** Supports both hardware (RTS/CTS) and software (Xon/Xoff) flow control mechanisms. - **Broad OS Compatibility:** Drivers available for DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer. - **Compact Design:** Standard PCI form factor with dimensions of 140 mm x 102 mm, suitable for most desktop and industrial PC enclosures. - **Robust Construction:** Built with high-quality Rayon PCB materials ensuring durability and signal integrity. - **Universal PCI Voltage Support:** Operates in both 5V and 3.3V PCI slots (universal PCI compatibility).

Manufacturer: Rayon

Category: RS232 2-Ports PCI

- **Dual RS232 Serial Ports:** Two independent RS232 communication ports for serial device connectivity. - **Low Profile PCI Design:** Compact form factor (121 × 55 mm) suitable for small form factor PCs and industrial systems. - **Plug & Play PCI Interface:** Fully compliant with PCI Local Bus Specification Rev. 2.1, supporting automatic resource assignment by BIOS. - **16C550 UART Compatibility:** Each port uses a 16C550-compatible UART with 16-byte transmit and receive FIFOs for efficient data handling. - **High-Speed Communication:** Supports baud rates from 50 bps up to 115,200 bps (standard 1.8432 MHz crystal) or up to 921,600 bps with optional 14.7456 MHz crystal. - **Shared IRQ Support:** One sharable interrupt request (IRQ) mapping for both ports, reducing system resource usage. - **Flexible I/O Mapping:** Six 8-byte I/O address blocks automatically assigned by PCI BIOS. - **Wide OS Compatibility:** Supports DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer. - **Universal PCI Voltage Support:** Operates in 5V or 3.3V PCI slots (33 MHz bus). - **Robust Construction:** Designed for industrial reliability and long-term operation. - **Rayon ASIC Controller:** Custom PCI controller ASIC ensures stable communication and full compliance with PCI bus standards.

Manufacturer: Rayon

Category: RS232 2-Ports PCI

- **Dual Isolated Serial Ports:** Provides two independent serial communication channels configurable as RS‑232, RS‑422, or RS‑485 interfaces. - **High Electrical Isolation:** 3 kV isolation between ports and system bus ensures protection against ground loops, surges, and electrical noise. - **Enhanced ESD Protection:** Built‑in electrostatic discharge protection rated at 15 kV (air discharge) and 8 kV (contact discharge) for reliable operation in electrically noisy environments. - **Low‑Profile PCIe Form Factor:** Compact design suitable for small form factor PCs, embedded systems, and industrial computers with limited expansion space. - **High Data Throughput:** Supports baud rates up to 921.6 kbit/s, enabling fast and stable data transmission for demanding serial applications. - **Large FIFO Buffer:** 128‑byte FIFO per port for efficient data handling and reduced CPU overhead during high‑speed communication. - **Single Power Requirement:** Operates solely from the PCIe 3.3 V DC power rail, simplifying system power design and reducing energy consumption. - **Wide Operating Temperature Range:** Designed for industrial environments with an extended temperature range from ‑40 °C to +75 °C. - **Universal Compatibility:** Fully compliant with PCI Express specifications, ensuring compatibility with a wide range of operating systems and hardware platforms. - **Durable Industrial Design:** Built with high‑quality components and robust PCB layout to ensure long‑term reliability and signal integrity.

Manufacturer: Rayon

Category: RS232 2-Ports PCI

- **Dual-Port Serial Interface:** Provides two independent serial communication channels configurable for RS-232, RS-422, or RS-485 operation. - **PCI Express Interface:** Fully compliant with PCI Express x1 standard, ensuring high-speed data throughput and compatibility with modern industrial PCs and servers. - **Surge and Isolation Protection:** - **Isolation Voltage:** 3 kV galvanic isolation between ports and system bus, protecting host systems from ground loops and transient voltages. - **Surge Protection:** 6 kV surge protection per port, safeguarding against lightning strikes and power surges. - **ESD Protection:** 15 kV (air discharge) and 8 kV (contact discharge) ESD protection, ensuring robust operation in environments with high static potential. - **High-Speed Data Transmission:** Supports baud rates up to **921.6 kbps**, enabling fast and reliable serial communication for industrial automation, instrumentation, and control systems. - **Low-Profile Form Factor:** Designed for compact industrial PCs and embedded systems with limited expansion space. - **Single Power Requirement:** Operates from a **3.3 V DC** power supply drawn directly from the PCIe slot, eliminating the need for external power sources. - **Wide Operating Temperature Range:** Rated for operation from **-40°C to +75°C**, suitable for both indoor and outdoor industrial environments. - **Connector Type:** Equipped with a **DB44 male D-sub connector**, providing a compact and reliable interface for serial connections. - **Flexible Configuration:** Each port can be independently configured for RS-232, RS-422, or RS-485 modes, supporting a wide range of serial communication protocols and devices.

Manufacturer: Rayon

Category: RS232 2-Ports PCI

- **Dual Isolated RS232 Ports:** Provides two independent RS232 serial communication channels with galvanic isolation to prevent ground loops and protect connected devices. - **High Electrical Isolation:** Isolation rated up to 2 kV between ports and system bus, ensuring safe operation in industrial environments with high electrical noise or potential differences. - **Integrated UART 16550 Controller:** Each port is equipped with a 16550 UART, offering 16-byte FIFO buffers for efficient data handling and reduced CPU load during high-speed communication. - **Configurable Base Addresses:** Supports multiple selectable I/O base addresses (03F8h, 02F8h, 03E8h, 02E8h) via onboard DIP switches, allowing flexible integration into existing systems. - **Selectable Interrupts (IRQ):** Compatible with IRQ lines 3, 4, 5, 7, 9, 10, 11, and 12, enabling conflict-free configuration in multi-device environments. - **Varistor Protection:** Each port includes varistor protection rated up to 15 kV, safeguarding against electrostatic discharge (ESD) and transient voltage spikes. - **Standard Connectors:** Two 9-pin D-sub (DE-9) connectors provide standard RS232 pinouts for easy connection to serial devices. - **Compact ISA Form Factor:** Designed for standard ISA slots, with a compact board size of 165 mm × 106 mm, suitable for legacy and industrial PC systems. - **High Reliability:** Industrial-grade components ensure long-term stability and durability under continuous operation.

Manufacturer: No category

Category: RS232 2-Ports PCI

- **Dual-Port Serial Interface:** Two independent serial ports supporting RS422 or RS485 communication standards. - **Selectable Interface Mode:** Each port can be configured individually as RS422 or RS485 using onboard DIP switches. - **High Compatibility:** Fully compatible with PCI Express bus architecture; plug-and-play installation with automatic resource assignment by PCI BIOS. - **ADDC (Auto Data Direction Control):** Built-in ADDC feature for RS485 mode ensures automatic control of data direction, eliminating the need for manual RTS signal management. - **Industrial-Grade Design:** Engineered for industrial control systems requiring reliable, noise-resistant serial communication. - **Wide OS Support:** Compatible with Windows 2000, XP, Vista, Windows 7, and Linux operating systems. - **Flexible Mounting:** Standard PCIe bracket included; low-profile bracket available upon request for compact systems. - **High-Speed Communication:** Supports baud rates from 50 bps up to 115,200 bps per port. - **DB9 Male Connectors:** Each port uses a standard DB9 male connector for easy integration with existing serial devices. - **Plug & Play Resource Allocation:** I/O mapping, memory mapping, and IRQ assignments are automatically handled by the PCI BIOS. - **Compact Form Factor:** Small PCB footprint (75 × 90 mm) suitable for space-constrained systems. - **Reliable Operation:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: RS485 / RS422 2-Ports

- **Dual Isolated Serial Ports:** Two independent RS422/RS485 ports with galvanic ground isolation for enhanced signal integrity and protection against ground loops and electrical noise. - **Selectable Interface per Port:** Each port can be configured individually as RS422 or RS485 via onboard DIP switches, allowing flexible deployment across different communication standards. - **High Compatibility:** Fully compatible with PCI Express bus architecture; plug-and-play installation with automatic I/O, memory, and IRQ mapping assigned by the PCI BIOS. - **Advanced Controller:** Utilizes the Moschip MCS9922 serial communication controller, providing high-speed data transfer and efficient interrupt handling. - **Wide Baud Rate Range:** Supports baud rates from 50 bps up to 115,200 bps, suitable for a wide range of industrial serial communication applications. - **ADDC (Auto Data Direction Control):** Built-in ADDC feature for RS485 mode enables automatic control of data direction, eliminating the need for manual RTS signal handling. - **Industrial-Grade Design:** Designed for industrial control systems with robust isolation, wide environmental tolerance, and reliable long-term operation. - **Operating System Support:** Compatible with Windows 2000, XP, Vista, Windows 7, and Linux distributions. - **Compact Form Factor:** Standard PCIe card dimensions (100 mm × 97 mm) with optional low-profile bracket for compact system integration. - **DB9 Male Connectors:** Each port is terminated with a standard DB9 male connector for easy connection to industrial serial devices. - **Plug & Play Configuration:** Fully automatic resource allocation (I/O, memory, IRQ) by PCI BIOS, simplifying installation and avoiding conflicts. - **Ground Isolation:** Each port is electrically isolated to prevent damage from voltage differences and to ensure stable communication in noisy environments.

Manufacturer: Rayon

Category: RS485 / RS422 2-Ports

- **Dual Ground-Isolated Serial Ports:** Provides two independent RS422/RS485 ports with galvanic isolation to prevent ground loops and electrical interference, ensuring stable communication in industrial environments. - **Flexible Interface Configuration:** Each port can be independently configured as RS422 or RS485 via DIP switch settings, allowing mixed-mode operation on a single card. - **ISA/EISA Bus Compatibility:** Fully compatible with standard ISA and EISA bus slots, supporting a wide range of legacy PC architectures (80286, 80386, 80486, and Pentium-class systems). - **Intelligent Buffer Design:** Incorporates a 16550A-compatible UART controller with programmable gain array (PGA) support, enabling efficient buffered communication and reduced CPU overhead. - **Configurable I/O Address and IRQ:** DIP switches and jumpers allow flexible assignment of I/O addresses and interrupt requests (IRQs), with independent IRQ configuration for each port. - **High-Speed Data Transmission:** Supports baud rates from 50 to 38,400 bps under UNIX systems and up to 115,200 bps under other operating systems. - **Wide OS Compatibility:** Supports multiple operating systems including SCO UNIX, SCO XENIX, MSDOS, Windows 95/98, Windows NT, and Windows 2000. - **Compact Form Factor:** Compact PCB design measuring 138 mm × 83 mm, suitable for integration into space-constrained systems. - **Industrial-Grade Environmental Tolerance:** Operates reliably in temperature ranges from 5°C to 65°C and humidity levels up to 95% RH. - **Upgradeable Product Line:** Compatible with RAYON’s extended product family, including four-port (A4000) and eight-port (A480) buffer cards, as well as PCI-based models (P584 and P588).

Manufacturer: Rayon

Category: RS485 / RS422 2-Ports

- **Single-Port PCI Serial Interface:** Provides one isolated serial communication port supporting RS422 or RS485 standards. - **Electrical Isolation:** Built-in galvanic isolation between the PC system and external devices enhances noise immunity and protects against ground loops. - **Mixed Settable Interface:** Each port can be configured independently via DIP switch for RS422 or RS485 operation, allowing flexible deployment in diverse communication environments. - **High-Speed Data Transfer:** Supports baud rates from 50 bps up to 230,400 bps, ensuring compatibility with both legacy and modern serial devices. - **Advanced UART Controller:** Utilizes the 16950A-compatible ASIX MCS9865 chip, providing 128-byte transmit and receive FIFOs for efficient data buffering and reduced CPU load. - **Plug & Play PCI Configuration:** I/O address, memory mapping, and IRQ assignments are automatically managed by the PCI BIOS, simplifying installation and avoiding resource conflicts. - **Dual DB9 Connectors:** Equipped with two DB9 male connectors for flexible connection options. - **Low Profile Option:** Optional low-profile bracket available for compact or embedded system installations. - **Operating System Support:** Compatible with Windows 2000, XP, 2003, Vista, Windows 7, and Linux distributions. - **Single Voltage Operation:** Designed for 5V-only PCI slots, ensuring stable operation in standard PC/AT environments. - **Compact Design:** PCB dimensions of 100 mm × 97 mm, suitable for space-constrained industrial PCs.

Manufacturer: Rayon

Category: RS485 / RS422 2-Ports

- **Single-Port RS422/RS485 Interface:** Provides one serial communication port configurable as RS422 or RS485 through DIP switch selection. - **Ground Isolation:** Each port is galvanically isolated to prevent ground loops and electrical interference, ensuring reliable operation in industrial environments. - **High-Speed Communication:** Supports baud rates from 50 bps up to 230,400 bps (software programmable). - **Advanced UART Controller:** Each port uses a 16950A-compatible ASIX MCS9865 chip, offering 128-byte transmit and receive FIFOs for efficient data buffering and reduced CPU load. - **Plug & Play PCI Configuration:** I/O mapping, memory mapping, and IRQ assignment are automatically handled by the PCI BIOS, simplifying installation and avoiding resource conflicts. - **Flexible Interface Selection:** DIP switches allow per-port configuration between RS422 and RS485 modes. - **Dual DB9 Male Connectors:** Provides two DB9 male connectors for easy connection to external serial devices. - **Low Profile Option:** Optional low-profile brackets available for compact or embedded PC chassis. - **Operating System Support:** Compatible with Windows 2000, XP, 2003, Vista, Windows 7, Linux, and SCO UNIX. - **Single Voltage Operation:** Operates exclusively on 5V PCI bus power. - **Compact Design:** PCB dimensions of 100 mm × 97 mm. - **Industrial Reliability:** Designed with Rayon’s robust PCB layout and isolation technology for long-term stability in harsh environments.

Manufacturer: Rayon

Category: RS485 / RS422 2-Ports

- **Dual-Port RS-422/485 Interface:** Provides two independent asynchronous serial communication ports supporting RS-422 and RS-485 standards. - **Asynchronous Serial Communication:** Each port operates asynchronously, allowing flexible data exchange between devices without requiring a shared clock signal. - **High Electrical Isolation:** Each communication channel is isolated to withstand voltages greater than **500 VDC**, protecting both the host system and connected devices from ground loops, surges, and electrical noise. - **Configurable Interrupts:** Supports multiple interrupt request (IRQ) lines — **IRQ 2–5, 10–12, and 15** — enabling flexible system integration and conflict-free operation in multi-device environments. - **COM Port Address Range:** Configurable for **COM1 through COM8**, allowing easy assignment and compatibility with legacy and modern systems. - **UART16450 Controller:** Each port is equipped with a **UART16450** chip, providing reliable serial data buffering and control for stable communication up to **115 kbps**. - **Driver Support:** Includes software drivers for **DOS** and **Windows** operating systems, ensuring compatibility with a wide range of industrial and legacy applications. - **Compact Form Factor:** The board measures **175 mm x 107 mm**, suitable for integration into compact industrial enclosures or embedded systems. - **Industrial Reliability:** Designed for continuous operation in demanding environments, with robust electrical design and high-quality components.

Manufacturer: No category

Category: RS485 / RS422 2-Ports

- **RS485 Communication Interface:** The AX2324D utilizes the RS485 standard for serial communication, allowing multi-drop networking and long-distance data transmission over twisted-pair cabling. This ensures stable communication in electrically noisy industrial environments. - **24 Digital Input/Output Channels:** The board provides 24 configurable DIO channels, enabling flexible use as digital inputs or outputs depending on system requirements. This makes it suitable for a wide range of control and monitoring tasks. - **Expandable System Architecture:** Up to **64 boards** can be connected in a single RS485 network, allowing large-scale distributed I/O systems to be built with minimal wiring complexity. - **8255 Mode 0 Compatibility:** The AX2324D is compatible with the **Intel 8255 Programmable Peripheral Interface (PPI) Mode 0**, ensuring straightforward integration with existing systems and software that utilize this standard. - **ASCII Instruction Set:** The device supports a simple **ASCII-based command set**, facilitating easy communication and control via serial commands. This makes it accessible for both developers and system integrators without requiring complex programming. - **Integrated Watchdog Timer:** A built-in **watchdog timer** enhances system reliability by automatically resetting the board in case of communication failure or software malfunction, ensuring continuous operation in mission-critical applications. - **Compact Form Factor:** With dimensions of **145 mm × 101 mm**, the AX2324D offers a space-efficient design suitable for control panels, DIN-rail enclosures, or embedded installations. - **50-Pin Connector Interface:** The board features a **50-pin connector** for direct connection to control panels or external I/O wiring harnesses, simplifying installation and maintenance. - **Industrial-Grade Design:** Engineered for durability and stability, the AX2324D is built to operate reliably in industrial environments with electrical noise, temperature variations, and mechanical vibration.

Manufacturer: Axiom

Category: RS485 / RS422 2-Ports

- **Dual Isolated Serial Ports:** Two independent RS-422/485 asynchronous serial ports with full isolation to protect against ground loops and electrical interference. - **16550 UART Integration:** Each port includes a 16550 UART (Universal Asynchronous Receiver/Transmitter) providing 16-byte FIFO buffers for improved data throughput and reduced CPU overhead. - **Flexible Communication Speeds:** Supports baud rates from 50 bps up to 57,600 bps, suitable for a wide range of industrial serial communication applications. - **PCI Bus Interface:** Fully compliant with standard PCI bus architecture, ensuring compatibility with most modern industrial PCs and embedded systems. - **Selectable IRQ and I/O Address:** Hardware-configurable via DIP switches, allowing selection of IRQ lines (2–7) and I/O port addresses (200h–3F8h) for flexible system integration. - **Status Indication:** Four onboard status LEDs provide visual feedback for power and communication activity, simplifying diagnostics and monitoring. - **Electrical Isolation:** Data lines are isolated to prevent damage from voltage spikes, surges, or ground potential differences. - **Compact and Durable Design:** Built with industrial-grade components for long-term reliability in harsh operating conditions. - **Standard Connectors:** Equipped with two D-type 9-pin male connectors for direct connection to serial devices. - **Power Efficiency:** Operates from a +5 VDC supply with a typical current consumption of 800 mA.

Manufacturer: Axiom

Category: RS485 / RS422 2-Ports

- **Dual-Port Serial Interface:** Provides two independent asynchronous serial communication ports supporting RS-422 and RS-485 standards. - **16550 UART Integration:** Each port is equipped with a 16550 Universal Asynchronous Receiver/Transmitter, enabling 16-byte FIFO buffers for improved data throughput and reduced CPU overhead. - **Flexible Baud Rate Range:** Supports data transmission speeds from 50 bps up to 57,600 bps, suitable for a wide range of industrial and automation applications. - **Selectable IRQ and I/O Address:** Hardware-configurable via DIP switches, allowing selection of IRQ lines (2–7) and I/O port addresses (200h–3F8h) for flexible system integration. - **Status Indication LEDs:** Four onboard status LEDs provide real-time visual feedback for port activity and operational status, simplifying diagnostics and monitoring. - **Standard PCI Interface:** Fully compliant with PCI bus specifications, ensuring compatibility with most modern and legacy PC-based systems. - **Dual D-Sub Connectors:** Equipped with two D-type 9-pin male connectors for direct connection to serial devices. - **Stable Power Operation:** Operates from a +5 VDC supply with a typical current consumption of 600 mA, ensuring efficient power usage and stable operation. - **Industrial Reliability:** Designed for continuous operation in demanding environments, offering robust electrical isolation and signal integrity.

Manufacturer: Axiom

Category: RS485 / RS422 2-Ports

- **Dual Isolated Serial Ports:** Provides two independent RS-422/RS-485 serial communication ports, each electrically isolated to protect connected devices and systems from ground loops and electrical noise. - **16550 UART Controller:** Each port is equipped with a 16550 Universal Asynchronous Receiver/Transmitter (UART), featuring a 16-byte FIFO buffer for efficient data handling and reduced CPU overhead. - **Wide Baud Rate Range:** Supports data transmission speeds from 50 bps up to 57,600 bps, accommodating a broad range of industrial communication requirements. - **ISA Bus Interface:** Designed for standard ISA bus systems, ensuring compatibility with legacy industrial PCs and embedded controllers. - **Selectable IRQ and I/O Address:** Configurable via DIP switches for IRQ lines (2–7) and I/O port addresses (200h–3F8h), allowing flexible system integration and conflict-free operation. - **Optical and Electrical Isolation:** Data lines are isolated to prevent signal interference and protect against voltage surges, ensuring stable communication in electrically noisy environments. - **Status Indication LEDs:** Four onboard status LEDs provide real-time visual feedback for port activity and operational status, simplifying diagnostics and monitoring. - **Compact Industrial Form Factor:** Compact PCB design (170 mm × 100 mm) suitable for installation in standard ISA slots within industrial enclosures. - **Durable Connectors:** Equipped with two D-type 9-pin male connectors for secure and reliable serial connections. - **Industrial Reliability:** Built for continuous operation in demanding environments, with robust electrical design and high-quality components.

Manufacturer: Axiom

Category: RS485 / RS422 2-Ports

- **Dual-Port RS-422/485 Interface:** Provides two independent asynchronous serial communication ports supporting both RS-422 and RS-485 standards, enabling long-distance, noise-resistant data transmission. - **16550 UART Controller:** Each port is equipped with a 16550 Universal Asynchronous Receiver/Transmitter (UART), offering 16-byte FIFO buffers for both transmit and receive operations, reducing CPU overhead and improving data throughput. - **Flexible Baud Rate Range:** Supports data transmission speeds from **50 bps to 57,600 bps**, accommodating a wide range of serial communication devices and protocols. - **Selectable IRQ and I/O Address:** Hardware-configurable via DIP switches, allowing selection of **IRQ lines 2–7** and **I/O port addresses from 200h to 3F8h**, ensuring compatibility with various system configurations. - **Status Indication LEDs:** Four onboard status LEDs provide real-time visual feedback for port activity and operational status, simplifying diagnostics and monitoring. - **Standard Connectors:** Equipped with **two D-type 9-pin male connectors (DB9M)** for direct connection to serial devices. - **Compact Form Factor:** PCB dimensions of **132 mm x 100 mm**, suitable for standard PC expansion slots and compact industrial enclosures. - **Industrial-Grade Reliability:** Designed for continuous operation in demanding environments, offering stable performance and long-term durability.

Manufacturer: Axiom

Category: RS485 / RS422 2-Ports