- **High Port Density:** Supports 48 independent RS422/RS485 serial ports via three external connector boxes (NF216). - **Universal PCI Compatibility:** Operates in both 5V and 3.3V PCI 33MHz bus slots, ensuring compatibility with legacy and modern systems. - **Single IRQ Resource:** Utilizes only one IRQ for all 48 ports, minimizing system resource usage. - **Flexible Interface Configuration:** Each port can be independently configured as RS422 or RS485 using DIP switches. - **Wide Software Support:** Compatible with DOS, Windows 95/98/Me, Windows NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Intelligent Architecture:** Based on the P640NU intelligent multi-port card platform, providing efficient data handling and reduced CPU load. - **High-Speed Communication:** Each port supports baud rates from 110 to 115,200 bps, with UNIX compatibility mappings for 57,600, 76,800, and 115,200 bps. - **Flow Control Options:** Supports both software (XON/XOFF) and hardware (RTS/CTS) flow control. - **Industrial Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Upgradeable Platform:** Compatible with Rayon’s intelligent PCIIOP series cards (e.g., P990F with Intel 80960JF processor, IOP3927F with 133MHz MIPS processor) using the same connector boxes.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **High Port Density:** Supports 32 independent serial ports in a single PCI slot. - **Multi-Protocol Support:** Each port can be configured individually for RS232, RS422, or RS485 operation via DIP switches. - **Universal PCI Compatibility:** Operates in both 5V and 3.3V PCI 33MHz bus slots, ensuring compatibility with a wide range of systems. - **Single IRQ Operation:** All 32 ports share one IRQ assigned automatically by the PCI BIOS, minimizing system resource usage. - **Intelligent Architecture:** Based on the P640NU intelligent multi-port controller card, providing efficient data handling and reduced CPU load. - **Comprehensive OS Support:** Drivers available for DOS, Windows 95/98/Me, Windows NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Flexible System Integration:** Modular design with detachable NF316 connector boxes and A640 interconnect cable. - **Industrial-Grade Design:** Rugged construction with wide operating temperature and humidity range. - **Upgradeable Platform:** Compatible with RAYON’s PCIIOP intelligent series cards (e.g., P990F, IOP3927F) for enhanced processing capability. - **Flow Control Options:** Supports both hardware (RTS/CTS) and software (XON/XOFF) handshaking. - **High-Speed Communication:** Configurable baud rates from 110 to 115,200 bps per port. - **Compact Form Factor:** 5.0 × 3.4 inch PCI card footprint for efficient space utilization.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **High Port Density:** Supports 48 independent serial ports in a single PCI slot. - **Multi-Protocol Support:** Each port can be configured individually for RS232, RS422, or RS485 operation via DIP switches. - **Universal PCI Compatibility:** Operates in both 3.3V and 5V PCI 33MHz bus slots, ensuring compatibility with modern and legacy systems. - **Single IRQ Utilization:** All 48 ports share one IRQ assigned automatically by the PCI BIOS, minimizing system resource usage. - **Intelligent Architecture:** Based on the P640NU intelligent multi-port controller, providing efficient data handling and reduced CPU load. - **Flexible System Integration:** Modular design with external NF316 connector boxes (three units per system) connected via A640 cable. - **Comprehensive OS Support:** Drivers available for DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Industrial Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Upgradeable Platform:** Compatible with RAYON’s PCIIOP intelligent series cards (e.g., P990F, IOP3927F) for enhanced processing power. - **Standardized Connectors:** Uses DB9 male connectors for all ports, simplifying cabling and integration. - **Flow Control Options:** Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control mechanisms. - **Baud Rate Flexibility:** Configurable per port from 110 to 115,200 bps, with UNIX compatibility mappings for 50–115,200 bps.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **High Port Density:** Supports up to **64 independent serial ports** in a single PCI slot. - **Multi-Protocol Support:** Each port can be configured individually for **RS232, RS422, or RS485** operation via DIP switches. - **Universal PCI Compatibility:** Operates in both **3.3V and 5V PCI 33MHz** bus environments. - **Single IRQ Resource:** All 64 ports share a single IRQ assigned by the PCI BIOS, optimizing system resource allocation. - **Intelligent Architecture:** Based on the **P640NU intelligent multi-port controller card**, providing efficient data handling and reduced CPU load. - **Flexible Expansion:** Utilizes **four NF316 connector boxes**, each providing 16 ports, daisy-chained via the **A640 cable**. - **Comprehensive OS Support:** Compatible with **DOS, Windows 95/98/Me/NT/2000/XP/Vista/7**, **Linux**, and **SCO OpenServer**. - **High-Speed Communication:** Supports baud rates from **110 to 115,200 bps**, with UNIX-compatible mappings for 57,600, 76,800, and 115,200 bps. - **Flow Control Options:** Supports both **XON/XOFF software** and **RTS/CTS hardware** handshaking. - **Industrial Reliability:** Designed for continuous operation in environments from **5°C to 40°C**, with humidity tolerance up to **90% RH**. - **Upgradeable Platform:** Compatible with **PCIIOP intelligent series** cards such as **P990F (Intel 80960JF)** and **IOP3927F (133MHz MIPS)** for enhanced processing power.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **Intelligent Onboard Processor:** Built-in 80286-20 MHz CPU offloads serial communication tasks from the host CPU, improving system performance. - **Scalable Port Configuration:** Supports configurations from **8 up to 64 serial ports** via daisy-chained connector boxes (NF116, NF216, NF316). - **Advanced UART Control:** Each connector box integrates a **FIFO-type 16C554 UART controller**, ensuring efficient data buffering and reduced latency. - **Flexible Interface Support:** Each port can be configured individually for **RS232, RS422, or RS485** communication via DIP switches. - **PCI Bus Compatibility:** Operates in **5V 33 MHz PCI slots**, with automatic memory mapping (8 KB I/O space assigned by PCI BIOS). - **Multi-OS Driver Support:** Compatible with **Linux, SCO OpenServer, DOS, Windows 95/98/Me, NT, 2000, XP, Vista, and Windows 7**. - **High Integration:** Each card uses only **one IRQ** for all ports, optimizing system resource allocation. - **Expandable Architecture:** Supports up to **two cards per system**, allowing a total of 128 serial ports in one PC. - **Industrial Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Connector Type:** DB37 male connector on the card; DB9 male connectors on external boxes.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **Intelligent PCI Processor Architecture:** The P640N incorporates an onboard intelligent processor that offloads serial communication tasks from the host CPU, improving system performance and reducing latency. - **Scalable Port Configuration:** Supports configurations from **8 up to 64 serial ports** via daisy-chained connector boxes (NF116, NF216, NF316). Each box provides 16 ports. - **Flexible Interface Support:** Each serial port can be configured individually as **RS232, RS422, or RS485** using DIP switches, allowing mixed interface environments on a single card. - **Advanced FIFO UART Control:** Built-in **FIFO-type 16C554 UART** controllers ensure efficient data buffering and high-speed communication with minimal CPU overhead. - **PCI Bus Compatibility:** Designed for **5V 33MHz PCI slots**, with BIOS-assigned memory or I/O mapping. Supports both **2×4KB memory map** or **256B/64B I/O map** configurations. - **Operating System Support:** Comprehensive driver support for **DOS, Windows 95/98/Me/NT/2000/XP/Vista/7**, **Linux**, and **SCO OpenServer**. - **High-Speed Communication:** Each port supports baud rates from **110 to 115,200 bps**, with software and hardware flow control options. - **Expandable System Architecture:** Up to **two P640N cards per system**, each supporting up to **four connector boxes** for a total of **64 ports per card**. - **Industrial-Grade Design:** Rugged construction with wide environmental tolerance, suitable for continuous operation in industrial and commercial environments.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **Intelligent Processor Architecture:** Embedded 3.3V intelligent processor for managing multi-port serial communication independently of the host CPU. - **Flexible Port Expansion:** Supports **8 to 64 serial ports** via daisy-chained external connector boxes (NF116, NF216, NF316). Each box provides 16 ports. - **Multi-Interface Support:** Each port can be configured individually as **RS232, RS422, or RS485** using DIP switches, allowing mixed interface operation on a single card. - **Advanced UART Control:** Built-in **FIFO-type 16C554 UART controller** ensures efficient data buffering and high-speed serial communication. - **PCI Bus Compatibility:** Operates in both **3.3V and 5V PCI 33MHz slots**, supporting up to **two cards per system**. - **High Performance Memory Mapping:** Supports **2 × 4KB memory map** or **256B/64B I/O mapping** assigned by PCI BIOS for flexible resource allocation. - **Comprehensive OS Support:** Compatible with **DOS, Windows 95/98/Me/NT/2000/XP/Vista/7**, **Linux**, and **SCO OpenServer**. - **Unified Driver Architecture:** Single driver package supports multiple operating systems and configurations, simplifying deployment. - **Expandable System Design:** Daisy-chain architecture allows up to **four NF316 boxes** or equivalent combinations for 64-port configurations. - **Included Accessories:** Ships with **A640 0.7m cable** for connection to external boxes.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **Intel 80960JF RISC Processor:** Embedded high-performance CPU for intelligent I/O management, offloading serial communication tasks from the host CPU. - **Scalable Port Architecture:** Supports configurations from **8 up to 64 serial ports** via daisy-chained connector boxes. - **Advanced UART Control:** Built-in **FIFO-type UART controller** (16C554) ensures stable, high-speed serial communication. - **Flexible Interface Support:** Each port can be configured as **RS232, RS422, or RS485** using DIP switches. - **PCI Bus Compatibility:** Operates in **5V, 33MHz PCI slots**, with automatic resource assignment by the PCI BIOS. - **Multi-OS Support:** Compatible with **Windows NT/2000/XP**, **Linux**, and **SCO OpenServer**. - **High Integration:** 8KB mapped memory for I/O, assigned dynamically by the PCI BIOS. - **Expandable System:** Supports up to **two P990F cards per system**, enabling up to 128 serial ports in a single PC. - **Industrial-Grade Design:** Rugged construction with DB37 male connector and modular external boxes for flexible deployment. - **Optimized for Multi-User Systems:** Reduces main CPU load by handling I/O communication independently.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **Eight Ground-Isolated RS232 Ports:** Provides eight fully isolated RS232 serial channels through a single PCI interface, ensuring electrical protection and signal integrity in industrial environments. - **Universal PCI Compatibility:** Supports both 3.3V and 5V PCI 33MHz bus slots, ensuring compatibility with legacy and modern PC architectures. - **Single IRQ Resource Allocation:** Utilizes only one IRQ for all eight ports, optimizing system resource usage and simplifying configuration. - **Intelligent Serial Processing:** Based on the P640NU intelligent multi-port architecture, enabling efficient data handling and reduced CPU load. - **Flexible Memory and I/O Mapping:** Supports both memory-mapped and I/O-mapped configurations, selectable via PCI BIOS. - **High-Speed Communication:** Each port supports baud rates from 110 to 115,200 bps, with UNIX-compatible rate mapping for 50, 75, 150 bps equivalents. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/Me, Windows NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Hardware Flow Control:** Supports both software (XON/XOFF) and hardware (RTS/CTS) flow control mechanisms. - **Industrial-Grade Isolation:** Each port is galvanically isolated to prevent ground loops and protect connected devices. - **Compact Design:** Occupies a single PCI slot with external IF108 connector box and A640 cable assembly. - **Upgradeable Architecture:** Compatible with Rayon’s PCIIOP intelligent series cards and connector boxes for future expansion.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **High Port Density:** Supports 16 independent, ground-isolated RS232 serial ports through a single PCI slot. - **Universal PCI Compatibility:** Operates in both 3.3V and 5V, 33MHz PCI bus slots, ensuring compatibility with legacy and modern systems. - **Intelligent Architecture:** Incorporates the P640NU intelligent multi-port card with dual IF108 connector boxes for distributed serial connectivity. - **Single IRQ Operation:** All 16 ports share one IRQ assigned by the PCI BIOS, minimizing system resource usage. - **Flexible Memory Mapping:** Supports both memory-mapped and I/O-mapped configurations, selectable via BIOS or jumper settings. - **Wide OS Support:** Compatible with DOS, Windows 95/98/Me, Windows NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Industrial Isolation:** Each port is galvanically isolated to prevent ground loops and protect connected equipment. - **Comprehensive Flow Control:** Supports both hardware (RTS/CTS) and software (XON/XOFF) handshaking. - **High-Speed Communication:** Configurable baud rates from 110 to 115,200 bps (with UNIX-compatible mapping for 50–115,200 bps). - **Expandable System Design:** Supports up to two cards per system, providing a total of 32 isolated RS232 ports. - **Included Accessories:** Supplied with A640 0.7m cable and two IF108 connector boxes (8 ports each).

Manufacturer: Rayon

Category: PCI max 128 Serial

- **24 Ground-Isolated RS232 Ports:** Provides 24 independent, galvanically isolated RS232 serial interfaces via three IF108 connector boxes (8 ports each). - **Universal PCI Compatibility:** Supports both 3.3V and 5V, 33MHz PCI bus slots, ensuring compatibility with modern and legacy systems. - **Single IRQ Resource Allocation:** All 24 ports share a single IRQ assigned automatically by the PCI BIOS, minimizing system resource usage. - **Intelligent Serial Architecture:** Incorporates the P640NU intelligent multi-port card with dedicated memory mapping and I/O mapping modes. - **Flexible Memory Mapping:** Supports either 2×4KB memory-mapped UART controllers or 256B/64B I/O-mapped configurations. - **High-Speed Communication:** Each port supports baud rates from 110 to 115,200 bps (software-configurable). - **Comprehensive OS Support:** Drivers available for DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Hardware Flow Control:** Supports both XON/XOFF software flow control and RTS/CTS hardware handshaking. - **Industrial Isolation:** Each port is ground-isolated to prevent ground loops and electrical interference in industrial environments. - **Compact Design:** Occupies a single PCI slot while providing 24 ports through external connector boxes. - **Upgradeable Architecture:** Compatible with Rayon’s PCIIOP series and other intelligent processor-based cards (e.g., P990F, IOP3927F).

Manufacturer: Rayon

Category: PCI max 128 Serial

- **High Port Density:** Supports 32 independent, ground-isolated RS232 serial ports via one PCI slot. - **Universal PCI Compatibility:** Operates in both 3.3V and 5V, 33MHz PCI bus slots. - **Intelligent Serial Processing:** Utilizes the P640NU intelligent multi-port card architecture with optional upgrade paths to PCIIOP intelligent processor cards. - **Single IRQ Operation:** All 32 ports share one IRQ, minimizing system resource usage. - **Ground Isolation:** Each RS232 port is galvanically isolated to prevent ground loops and electrical interference. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Flexible System Mapping:** Supports both memory-mapped and I/O-mapped configurations, selectable via PCI BIOS. - **Expandable Architecture:** Composed of one P640NU card, four IF108 connector boxes, and one A640 0.7m cable. - **Industrial Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Upgradeable Platform:** Compatible with higher-end intelligent cards such as P990F (Intel 80960JF CPU) and IOP3927F (133MHz MIPS CPU).

Manufacturer: Rayon

Category: PCI max 128 Serial

- **Dual Interface Support:** 8 ground-isolated RS232 ports and 8 ground-isolated RS422/RS485 ports in one PCI slot. - **Universal PCI Compatibility:** Supports both **3.3V and 5V 33MHz PCI bus slots**, ensuring compatibility with modern and legacy systems. - **Single IRQ Operation:** All 16 ports share a single IRQ, optimizing system resource allocation. - **Intelligent Architecture:** Built on the **P640NU intelligent multi-port card** platform with optional IF108 and IF208 connector boxes. - **Flexible Memory Mapping:** Supports both **memory-mapped (2×4KB)** and **I/O-mapped (256B + 64B)** configurations, selectable via PCI BIOS. - **High-Speed Communication:** Configurable baud rates from **110 to 115,200 bps**, with UNIX compatibility mappings for 50/75/150/200 bps equivalents. - **Full Isolation:** Each port is galvanically isolated to prevent ground loops and electrical interference. - **Comprehensive OS Support:** Compatible with **DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, and SCO OpenServer**. - **Hardware Handshaking:** Supports both **RTS/CTS** (hardware) and **XON/XOFF** (software) flow control. - **Industrial Durability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Upgradeable Platform:** The P640NU card can be upgraded to **PCIIOP series** cards with local processors (e.g., P990F with Intel 80960JF or IOP3927F with 133MHz MIPS CPU).

Manufacturer: Rayon

Category: PCI max 128 Serial

- **Dual 8-Port Configuration:** Supports 8 ground-isolated RS232 ports and 8 isolated RS232/RS422/RS485 ports simultaneously in one PCI slot. - **Universal PCI Compatibility:** Operates in both 3.3V and 5V PCI 33MHz bus slots, ensuring compatibility with modern and legacy systems. - **Intelligent Serial Processing:** Incorporates the P640NU intelligent multi-port card architecture, enabling efficient data handling and reduced CPU load. - **Flexible Interface Selection:** Each port on the IF308 connector box can be independently configured as RS232, RS422, or RS485 via DIP switches. - **High-Speed Communication:** Supports baud rates from 110 bps up to 115,200 bps (software-selectable up to 230,400 bps in some configurations). - **Hardware and Software Flow Control:** Provides XON/XOFF software handshake and RTS/CTS hardware handshake for reliable data transmission. - **Ground Isolation:** Each port is galvanically isolated to prevent ground loops and electrical interference, ideal for industrial environments. - **Single IRQ Resource:** All 16 ports share one IRQ assigned by the PCI BIOS, optimizing system resource allocation. - **Cross-Platform Driver Support:** Compatible with DOS, Windows 95/98/Me, NT, 2000, XP, Vista, Windows 7, Linux, and SCO OpenServer. - **Expandable System Architecture:** Supports daisy-chaining of up to 8 external connector boxes for large-scale serial expansion. - **Industrial Reliability:** Designed for continuous operation in environments with temperature and humidity variations.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **Eight Ground-Isolated Serial Ports:** Supports 8 independent RS422/RS485 ports with full ground isolation, ensuring signal integrity and protection against electrical noise and ground loops. - **Universal PCI Compatibility:** Operates in both 3.3V and 5V, 33MHz PCI slots, supporting modern and legacy PC architectures. - **Single IRQ Resource:** All eight ports share one IRQ, minimizing system resource usage and simplifying configuration. - **Flexible Address Mapping:** Supports both memory-mapped and I/O-mapped modes, selectable via PCI BIOS configuration. - **High-Speed Communication:** Each port supports baud rates from 110 to 115,200 bps (software-selectable). - **Independent Port Configuration:** Each channel can be configured individually as RS422 or RS485 via DIP switches. - **Hardware and Software Flow Control:** Supports XON/XOFF (software) and RTS/CTS (hardware) handshaking. - **Cross-Platform Driver Support:** Compatible with DOS, Windows 95/98/Me, NT, 2000, XP, Vista, Windows 7, Linux, and SCO OpenServer. - **Industrial-Grade Isolation:** Designed for industrial environments with robust isolation and EMI protection. - **Expandable System Architecture:** Supports up to two cards per system, providing up to 16 isolated serial ports. - **Bundled Accessories:** Includes A640 0.7m cable and IF208 connector box for 8-port RS422/RS485 interface. - **Metal Enclosure Option:** Available in card-only or metal box configurations for rack or panel installations.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **16 Ground‑Isolated Serial Ports:** Provides sixteen independent RS‑422/RS‑485 ports with galvanic isolation to prevent ground loops and electrical interference. - **Universal PCI Interface:** Compatible with both 3.3 V and 5 V 33 MHz PCI slots, ensuring broad motherboard compatibility. - **Single IRQ Operation:** All sixteen ports share one interrupt request line, minimizing system resource usage. - **Intelligent Architecture:** Incorporates the P640NU intelligent multi‑port controller with dual 4 KB memory‑mapped UART buffers or selectable I/O‑mapped operation. - **Flexible Address Mapping:** Supports both memory‑mapped and I/O‑mapped configurations, automatically assigned by PCI BIOS. - **High‑Speed Communication:** Each port supports baud rates from 110 bps to 115,200 bps (software‑selectable). - **Independent Mode Selection:** Each port can be configured individually for RS‑422 or RS‑485 operation via DIP switches. - **Comprehensive OS Support:** Drivers available for DOS, Windows 95/98/Me, Windows NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Hardware and Software Flow Control:** Supports XON/XOFF software handshake and RTS/CTS hardware handshake. - **Industrial Isolation:** Each IF208 connector box provides ground isolation for eight ports, ensuring signal integrity in electrically noisy environments. - **Compact Design:** Occupies a single PCI slot while supporting up to sixteen serial channels. - **Upgradeable Platform:** Compatible with Rayon’s intelligent PCIIOP series cards and connector boxes for future expansion. - **Bundled Accessories:** Includes A640 0.7 m cable and two IF208 connector boxes (8 ports each).

Manufacturer: Rayon

Category: PCI max 128 Serial

- **24 Ground-Isolated RS422/RS485 Ports:** Supports 24 fully isolated serial channels through three IF208 connector boxes (8 ports per box). - **Universal PCI Compatibility:** Operates in both 3.3V and 5V, 33MHz PCI slots, ensuring compatibility with modern and legacy systems. - **Single IRQ Resource:** All 24 ports share one IRQ assigned by the PCI BIOS, minimizing system resource usage. - **Flexible Address Mapping:** Supports both memory-mapped and I/O-mapped configurations for optimal system integration. - **High-Speed Communication:** Each port supports baud rates from 110 to 115,200 bps, with UNIX compatibility mappings for 50, 75, 150 bps equivalents. - **Independent RS422/RS485 Configuration:** Each port can be individually configured via DIP switches. - **Hardware and Software Flow Control:** Supports RTS/CTS hardware handshake and XON/XOFF software control. - **Comprehensive OS Support:** Drivers available for DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Industrial Isolation:** Each port is ground-isolated to prevent ground loops and electrical interference. - **Compact Design:** Occupies a single PCI slot while providing 24 serial channels. - **Included Accessories:** Supplied with A640 0.7m cable and three IF208 connector boxes. - **Upgradeable Architecture:** Compatible with Rayon’s intelligent PCIIOP series and connector boxes.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **High-Density Serial Expansion:** Supports 32 ground-isolated RS422/RS485 serial ports through a single PCI slot using four IF208 boxes (8 ports each). - **Universal PCI Compatibility:** Operates in both 3.3V and 5V 33MHz PCI slots, ensuring compatibility with modern and legacy systems. - **Intelligent Resource Management:** Utilizes a single IRQ for all 32 ports, minimizing system resource consumption. - **Flexible Address Mapping:** Supports both memory-mapped and I/O-mapped configurations selectable via PCI BIOS. - **Isolation and Reliability:** Each port is galvanically isolated to prevent ground loops and electrical interference, ideal for industrial environments. - **Comprehensive OS Support:** Drivers available for DOS, Windows 95/98/Me, Windows NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Configurable Interface:** Each port can be independently configured as RS422 or RS485 via DIP switches. - **Flow Control Options:** Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control. - **Industrial-Grade Design:** Operates within 5°C–40°C and 10–90% RH, suitable for controlled industrial environments. - **Upgradeable Architecture:** Compatible with Rayon’s PCIIOP intelligent series cards and connector boxes for future scalability.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **Dual-Port Configuration:** Supports 8 ground-isolated RS422/RS485 ports and 8 configurable RS232/RS422/RS485 ports simultaneously. - **Universal PCI Compatibility:** Operates in both 3.3V and 5V 33MHz PCI slots, ensuring compatibility with legacy and modern PC architectures. - **Intelligent Serial Processing:** Incorporates the P640NU intelligent multi-port card architecture, enabling efficient data handling and reduced CPU load. - **Ground Isolation:** Each port is galvanically isolated to prevent ground loops and electrical interference, ideal for industrial automation and communication systems. - **Flexible Interface Selection:** Each port can be independently configured via DIP switches for RS232, RS422, or RS485 operation. - **High-Speed Communication:** Supports baud rates from 110 bps up to 115,200 bps (software-selectable), with UNIX compatibility mappings for 50, 75, 150 bps to achieve 57,600, 76,800, and 115,200 bps. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Single IRQ Resource:** Utilizes one IRQ for all 16 ports, optimizing system resource allocation. - **Industrial-Grade Design:** Ruggedized metal box structure with DB9 male connectors and optional A640 0.7m cable for reliable connectivity. - **Upgradeable Architecture:** The P640NU card can be upgraded to PCIIOP series intelligent cards (e.g., P990F with Intel 80960JF or IOP3927F with 133MHz MIPS processor) using the same connector boxes.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **16 Ground-Isolated Serial Ports:** Supports 16 independent RS232/RS422/RS485 ports with full galvanic isolation to prevent ground loops and electrical interference. - **Universal PCI Compatibility:** Operates in both 3.3V and 5V PCI 33MHz slots, ensuring compatibility with modern and legacy systems. - **Single IRQ Resource:** All 16 ports share one IRQ, minimizing system resource usage and simplifying configuration. - **Flexible Interface Configuration:** Each port can be independently set to RS232, RS422, or RS485 mode via DIP switches. - **High-Speed Communication:** Supports baud rates from 110 bps up to 115,200 bps (software-selectable up to 230,400 bps in some configurations). - **Hardware and Software Flow Control:** Supports both RTS/CTS hardware handshaking and XON/XOFF software flow control. - **Intelligent Multi-Port Architecture:** Based on the P640NU intelligent multi-port card architecture with IF308 connector boxes. - **Broad OS Support:** Compatible with DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Industrial-Grade Isolation:** Each port is ground-isolated, ensuring reliable operation in electrically noisy environments. - **Expandable System Design:** Supports up to two cards per system, providing up to 32 isolated serial ports. - **Included Accessories:** Ships with A640 0.7m cable and two IF308 connector boxes (8 ports each). - **Driver Support:** Comprehensive driver packages for multiple operating systems, including source-level Linux drivers for kernel 2.2–2.6.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **24 Ground-Isolated Serial Ports:** Supports 24 individually isolated RS232/RS422/RS485 ports through three IF308 connector boxes (8 ports per box). - **Universal PCI Compatibility:** Operates in both 3.3V and 5V PCI 33MHz slots, suitable for modern and legacy systems. - **Single IRQ Resource:** All 24 ports share one IRQ, minimizing system resource usage. - **Flexible Interface Configuration:** Each port can be independently configured as RS232, RS422, or RS485 via DIP switches. - **High-Speed Communication:** Supports baud rates from 110 to 115,200 bps (software-selectable). - **Hardware and Software Flow Control:** Supports both RTS/CTS hardware and XON/XOFF software handshaking. - **Ground Isolation:** Each port is galvanically isolated to prevent ground loops and electrical interference. - **Cross-Platform Driver Support:** Compatible with DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, and SCO OpenServer. - **Intelligent Architecture:** Based on the P640NU intelligent multi-port card architecture, with optional upgrade to PCIIOP series for local CPU processing. - **Compact Design:** Fits a single PCI slot, with external connector boxes for modular expansion. - **Industrial Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: PCI max 128 Serial

- **High-Density Serial Expansion:** Supports 32 independent, ground-isolated serial ports (RS232/RS422/RS485) via one PCI slot. - **Universal PCI Compatibility:** Operates in both 3.3V and 5V, 33MHz PCI bus slots. - **Intelligent Resource Management:** Utilizes a single IRQ for all 32 ports, minimizing system resource consumption. - **Flexible Interface Configuration:** Each port can be independently configured as RS232, RS422, or RS485 using DIP switches. - **Isolation Protection:** Full ground isolation per port ensures electrical protection and noise immunity in industrial environments. - **High-Speed Communication:** Supports baud rates from 110 bps to 115,200 bps (software-selectable, with UNIX compatibility mapping). - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/Me, NT, 2000, XP, Vista, Windows 7, Linux, and SCO OpenServer. - **Hardware & Software Flow Control:** Supports both XON/XOFF (software) and RTS/CTS (hardware) handshaking. - **Compact Design:** Occupies a single PCI slot while supporting up to 32 serial channels. - **Industrial Reliability:** Designed for continuous operation in environments with wide temperature and humidity ranges. - **Upgradeable Architecture:** Compatible with RAYON’s intelligent PCIIOP and IOP3927 series for future scalability.

Manufacturer: Rayon

Category: PCI max 128 Serial