- **High-Speed Serial Communication:** Supports baud rates up to **921.6 kbps**, enabling fast and reliable data transfer for industrial and commercial applications. - **4 Independent RS-232 Ports:** Each port operates independently with its own I/O address and IRQ configuration. - **Surge Protection:** Built-in **2 kV isolation** for each port ensures protection against electrical surges and transient voltages. - **Advanced ASIC Design:** Custom-designed ASIC replaces multiple discrete ICs, reducing board size and improving reliability. - **16550 UART Compatibility:** Each port uses a 16550 or compatible UART with 16-byte FIFO buffers for efficient data handling and reduced CPU load. - **Software-Configurable Hardware:** No jumpers or DIP switches required; configuration is stored in on-board EEPROM and managed via software utility (Io-irq.exe). - **Flexible IRQ and I/O Addressing:** Supports IRQs 2, 3, 4, 5, 7, 10, 11, 12, and 15, and I/O address range from 0x0000 to 0xFFFF. - **Hardware Flow Control:** On-chip RTS/CTS flow control prevents data loss during high-speed transmission. - **Compact Half-Size ISA Board:** Dimensions of 157 mm × 83 mm allow installation in space-constrained systems. - **Multi-OS Support:** Compatible with Windows NT, Windows 95/98, DOS, Windows 3.x, Linux, SCO UNIX/XENIX/OpenServer, QNX, FreeBSD, and OS/2. - **Diagnostic and Programming Tools:** Bundled with Moxa’s PComm (Windows) and API-232 (DOS) libraries for application development and diagnostics. - **Comprehensive Surge and EMI Protection:** Designed for industrial environments with robust electrical protection.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four RS-232 Ports:** Provides four independent asynchronous serial communication channels. - **High-Speed Data Transfer:** Supports baud rates from 50 bps up to 921.6 Kbps. - **Advanced UART Controller:** Equipped with four 16C550C or compatible UARTs, each with 32-byte transmit and receive FIFOs for efficient data handling. - **Hardware Flow Control:** On-chip RTS/CTS flow control ensures no data loss during high-speed transmission. - **Surge Protection:** Integrated 2000 V surge protection on each port (C104HS/PCI model only) for enhanced reliability in harsh environments. - **Plug and Play PCI Interface:** Fully compliant with PCI Specification 2.1; IRQ and I/O addresses are automatically assigned by the system BIOS. - **Compact Half-Size Design:** Board dimensions of 120 mm × 100 mm allow installation in standard PCI slots. - **Operating System Support:** Compatible with Windows NT, Windows 95/98, and DOS. - **Software Tools:** Bundled with Moxa’s _PComm_ Lite communication library and utilities for diagnostics, monitoring, and terminal emulation. - **Flexible Connectivity:** Includes DB37-to-DB25 (Opt4C) or DB37-to-DB9 (Opt4D) fan-out cable options. - **Reliability and Stability:** ASIC-based design ensures consistent performance and long-term durability.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS-232 Ports:** Each port operates independently with its own I/O address and IRQ configuration. - **Custom ASIC Design:** Reduces component count and board size to half-length ISA form factor. - **Software Configuration:** No jumpers or DIP switches; all settings are stored in onboard EEPROM and configured via software utility (Io-irq.exe). - **16550 UARTs:** Each port uses a TI 16550 UART with 16-byte FIFO buffers for efficient data handling. - **16-bit AT Bus Architecture:** Ensures compatibility with ISA and EISA systems and supports multiple IRQs. - **Operating System Support:** Drivers provided for Windows NT, Windows 95/98, DOS, and Windows 3.x; compatible with Linux, SCO UNIX/XENIX/OpenServer, QNX, FreeBSD, and OS/2. - **High Compatibility:** Fully compatible with other multiport boards using 16450/16550 UARTs. - **Quick Installation Mode:** Allows automatic configuration under Windows NT/95/98 without running DOS utilities. - **Comprehensive Software Tools:** Includes PComm (Windows) and API-232 (DOS/Windows 3.x) libraries for application development. - **Diagnostic and Monitoring Utilities:** Built-in tools for port testing, monitoring, and terminal emulation. - **Compact Half-Size Board:** Ideal for space-constrained industrial and commercial PC systems.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS-232 Ports:** Provides four asynchronous serial communication channels for connecting multiple serial devices simultaneously. - **High-Speed Data Transmission:** Supports baud rates from **50 bps up to 921,600 bps**, ensuring compatibility with both legacy and high-speed serial devices. - **Advanced UART Controller:** Equipped with **Texas Instruments 16550C UART** featuring a **16-byte FIFO buffer** per port, reducing CPU load and improving data throughput. - **Surge and ESD Protection:** Built-in **25 kV ESD protection** on each port ensures reliable operation in electrically noisy industrial environments and safeguards connected equipment. - **Compact, Space-Saving Design:** Optimized for embedded systems with a **small footprint of 157 mm × 83 mm**, allowing installation in space-constrained enclosures. - **RJ45 Connectors:** Each serial port uses an **RJ45 interface**, simplifying cabling and enabling flexible connection options with RJ45-to-DB9 or RJ45-to-DB25 adapters. - **Software-Based Configuration:** No jumpers or DIP switches required; all port parameters (I/O address, IRQ, etc.) are configured via software utilities, simplifying setup and maintenance. - **AT Bus Interface:** Designed for **ISA/AT bus architecture**, ensuring compatibility with legacy industrial PCs and embedded controllers. - **Industrial-Grade Reliability:** Engineered for continuous operation in demanding environments, with robust electrical isolation and durable components.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS-232 Ports:** Provides four fully functional serial communication channels for simultaneous data transmission and reception. - **High-Speed Data Transfer:** Supports baud rates from **50 bps up to 921,600 bps**, enabling compatibility with a wide range of serial devices and communication requirements. - **TI 16550C UART Chipset:** Each port is equipped with a **16-byte FIFO buffer**, ensuring efficient data handling, reduced CPU load, and minimized data loss during high-speed communication. - **Software-Based Configuration:** No jumpers or DIP switches are required; all port parameters (I/O address, IRQ, etc.) are configured via software utilities, simplifying installation and maintenance. - **Compact AT Form Factor:** Designed for embedded and industrial PC systems with limited space, measuring **157 mm x 83 mm**, allowing easy integration into standard AT slots. - **RJ45 Connectors:** Utilizes RJ45 connectors for serial port connections, offering a compact and secure interface that simplifies cabling and reduces clutter. - **Space-Saving Design:** Optimized for embedded systems and compact industrial PCs where board space is at a premium. - **Wide Baud Rate Range:** Supports both low-speed and high-speed serial communication, making it suitable for diverse industrial applications. - **Reliable Industrial-Grade Construction:** Engineered for continuous operation in demanding environments, ensuring long-term stability and durability. - **Moxa Software Support:** Compatible with Moxa’s configuration and diagnostic tools for easy setup, monitoring, and troubleshooting.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Provides four fully functional RS232 serial interfaces for simultaneous communication with multiple serial devices. - **High-Speed Data Transfer:** Supports baud rates up to **921.6 kBd**, ensuring fast and reliable data transmission for demanding applications. - **Advanced UART Controller:** Equipped with **16550-compatible UARTs** featuring **128-byte FIFO buffers**, minimizing CPU load and improving data throughput. - **PCI Express Interface:** Utilizes the PCI Express bus standard for high-speed, low-latency communication with the host system. - **Compact Design:** Compact PCB dimensions of **114 mm x 104 mm**, suitable for standard and small form factor PCs. - **Low Power Requirement:** Operates solely on **3.3V DC** power supplied through the PCIe slot, eliminating the need for external power sources. - **Flexible Connectivity:** Includes **two DB9 male D-sub connectors** on the main bracket and an additional **SM23410 bracket** providing two more DB9 male connectors for COM2 and COM3. - **Scalable Configuration:** Supports installation of up to **four COM-8504 boards per PC**, allowing expansion up to 16 serial ports in a single system. - **Industrial-Grade Reliability:** Designed for continuous operation in industrial environments with robust electrical design and stable signal integrity. - **Plug-and-Play Compatibility:** Fully compliant with PCI Express standards, ensuring easy installation and automatic resource allocation by the operating system.

Manufacturer: JS Automation

Category: RS232 4-Ports

- **Four Independent RS-232 Ports:** Provides four fully functional RS-232 serial interfaces for connecting multiple serial devices simultaneously. - **PCI Express x1 Interface:** Fully compliant with PCI Express x1 specifications, ensuring compatibility with any PCIe slot (x1, x4, x8, x16). - **High-Speed Data Transmission:** Supports baud rates from 50 bps up to 921.6 Kbps for fast and stable data communication. - **Turbo Serial Engine™ Technology:** Incorporates Moxa’s proprietary high-performance serial communication chip (MU860) with 128-byte FIFO for optimized throughput and reduced CPU load. - **Comprehensive Flow Control:** Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control for reliable data transfer. - **Full Modem Control Signals:** Ensures compatibility with a wide range of serial peripherals and legacy equipment. - **Low Profile Form Factor:** Compact 67.21 x 100 mm design suitable for small form factor PCs and embedded systems. - **15 kV ESD Protection:** On-board electrostatic discharge protection safeguards the board and connected devices from electrical surges. - **LED Indicators:** On-board transmit (red) and receive (green) LEDs for easy monitoring and maintenance. - **Wide OS Support:** Drivers available for Windows, Linux, Unix, DOS, and embedded operating systems. - **Flexible Cable Options:** Includes DB44-to-DB9 or DB44-to-DB25 breakout cables for versatile connectivity. - **Long-Term Reliability:** Backed by a 5-year manufacturer warranty and Moxa’s industrial-grade quality assurance.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Universal PCI Compatibility:** Supports both 3.3V and 5V PCI slots, ensuring compatibility with virtually all modern PC servers and industrial computers. - **Four Independent RS-232 Ports:** Provides four fully independent serial communication channels for simultaneous data transmission and reception. - **High-Speed Data Transfer:** Supports baud rates from 50 bps up to 230.4 Kbps, suitable for a wide range of serial communication applications. - **Low-Profile Design:** Compact 65 × 120 mm form factor with an 80 mm low-profile bracket, ideal for space-constrained systems and rack-mounted servers. - **Embedded Surge Protection:** Integrated 16 kV ESD protection on all signal lines ensures robust operation in electrically noisy environments. - **Advanced UART Controller:** Equipped with MOXA’s proprietary UART (16C550C compatible) featuring a 64-byte FIFO for efficient data buffering and reduced CPU load. - **Flexible Connector Options:** Standard DB-44 female connector on the board, with included breakout cable to four DB9 male connectors (DB25 optional). - **Plug-and-Play Configuration:** BIOS automatically assigns I/O addresses and IRQs, simplifying installation and system integration. - **Comprehensive Software Support:** Includes MOXA Software CD with drivers and utilities for major operating systems. - **Regulatory Compliance:** Certified to CE and FCC standards for electromagnetic compatibility and safety.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS-232 Ports:** Provides four asynchronous serial communication channels for connecting multiple serial devices simultaneously. - **Intelligent Onboard Processing:** Equipped with a **TMS320C203 RISC processor**, enabling intelligent data handling and reducing host CPU load. - **High-Performance UART:** Utilizes **TI 16550C UARTs** with **32-byte FIFO buffers** per port for efficient data buffering and reduced interrupt overhead. - **Large Onboard Memory:** Integrated **512 kB memory** for buffering and intelligent data management, ensuring smooth communication even under heavy data loads. - **Wide Baud Rate Range:** Supports data rates from **50 bps up to 921,600 bps**, accommodating both legacy and high-speed serial applications. - **Compact PCI Form Factor:** Designed as a **space-saving PCI card (160 × 95 mm)** suitable for embedded systems and compact industrial PCs. - **RJ45 Connectors:** Each port uses an **RJ45 interface**, simplifying cabling and reducing space requirements compared to traditional DB9 connectors. - **Software-Based Configuration:** No jumpers or DIP switches required; all port parameters and IRQ/DMA settings are configured via software utilities. - **Industrial Reliability:** Built for continuous operation in industrial environments, offering stable performance and long-term durability. - **Compatibility:** Fully compatible with standard PCI bus interfaces and supports major operating systems through Moxa’s driver suite.

Manufacturer: Moxa

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Provides four fully functional RS232 serial communication channels on a single PCIe card, enabling simultaneous multi-device connectivity. - **Oxford 16950 Compatible Controller:** Each port is based on an Oxford 16950-compatible UART, offering advanced buffering, high-speed data transfer, and compatibility with legacy serial devices. - **PCI Express Interface:** Utilizes the PCIe bus architecture for high-speed data throughput and plug-and-play installation. - **Flexible Baud Rate Configuration:** Supports baud rates from 50 bps up to 115200 bps per port, suitable for a wide range of serial communication devices. - **Memory-Mapped I/O:** System I/O and IRQ mapping are automatically assigned by the PCI BIOS, simplifying system integration and resource allocation. - **Compact Design:** The card measures 93 mm x 70 mm, fitting standard PCIe slots; a low-profile version (OPe954L) is available for compact systems. - **DB44 Connector Interface:** The main card features a DB44 female connector, which connects to an included breakout cable (R904) that provides four DB9 male connectors. - **Cross-Platform Driver Support:** Compatible with multiple operating systems including Windows 2000, XP, 2003, Vista, and Linux distributions. - **Industrial-Grade Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance. - **Scalable Product Family:** Part of Rayon’s OPe9xx series, offering 2-port (OPe952) and 8-port (OPe958) variants for flexible system expansion.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Universal PCI Compatibility:** Supports both 3.3V and 5V PCI slots at 33 MHz, ensuring broad motherboard compatibility. - **Four Independent RS232 Ports:** Each port is fully 16550A UART compatible, supporting baud rates from 50 to 115,200 bps. - **5V Power on Pin 9:** Provides 5V output on the RI signal pin (pin 9) for powering external devices such as barcode readers, scanners, or serial peripherals. - **Plug & Play Configuration:** Automatic IRQ and I/O address mapping assigned by PCI BIOS; no manual configuration required. - **Surge Protection:** Integrated surge protection on TXD and RXD signal lines enhances reliability in industrial environments. - **16550A-Compatible UARTs:** Each port includes a 16-byte transmit and receive FIFO buffer, reducing CPU load and improving throughput. - **Operating System Support:** Compatible with DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, SCO OpenServer, and UNIX systems. - **Compact Design:** 120 mm × 100 mm PCB form factor suitable for standard PCI slots. - **External Connectivity:** Includes DB37-to-4×DB9M cable (DB25M optional). - **Shared IRQ Support:** Allows multiple PCI cards to share a single interrupt line, optimizing system resources. - **Industrial Reliability:** Designed for continuous operation in environments with 0–55°C temperature and 10–95% relative humidity.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Universal PCI Compatibility:** Operates in both 3.3V and 5V PCI slots (33 MHz), ensuring broad motherboard compatibility. - **Four Independent RS232 Ports:** Each port supports full RS232 signaling (TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND). - **16550A UART Compatibility:** Each port includes a 16550A-compatible UART with 16-byte FIFO for efficient data buffering and reduced CPU overhead. - **Plug & Play Configuration:** Automatic IRQ and I/O address mapping assigned by the PCI BIOS, simplifying installation and configuration. - **5V Power Supply Operation:** Designed to operate using only the 5V power rail from the PCI slot, ensuring stable and efficient power delivery to all serial ports. - **Surge Protection:** Integrated surge protection on TXD and RXD signal lines enhances reliability in electrically noisy environments. - **Flexible Connector Options:** Includes a DB37 female to 4×DB9 male breakout cable (DB25 male version available upon request). - **Wide OS Compatibility:** Supports multiple operating systems including DOS, Windows 95/98/ME/NT/2000/XP/Vista/7, Linux, SCO OpenServer, and UNIX variants. - **Compact Design:** Small form factor (120 mm × 100 mm) suitable for standard PCI slots in desktop or industrial PCs. - **Industrial-Grade Reliability:** Designed for continuous operation in environments with temperature ranges from 0°C to 55°C and humidity up to 95% RH.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Each port supports asynchronous serial communication with full modem control signals. - **16550A-Compatible UARTs:** Each channel includes a 16-byte transmit and receive FIFO buffer for efficient data handling and reduced CPU load. - **Plug & Play PCI Interface:** Fully compliant with PCI Local Bus Specification Rev. 2.1; automatic resource allocation (I/O address, IRQ) by BIOS. - **Shared IRQ Support:** Multiple PCI cards can share a single interrupt line, simplifying system integration. - **High-Speed Communication:** Supports baud rates up to 115.2 kbps (1.8432 MHz crystal) or up to 921.6 kbps (14.7456 MHz crystal). - **Flexible Flow Control:** Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control. - **Comprehensive OS Support:** Compatible with legacy and modern operating systems, including Windows 2000/XP/7, Linux, DOS, and SCO. - **Expandable System Design:** Up to two P584 cards can be installed in a single system, providing up to eight serial ports. - **Universal PCI Compatibility:** Operates in both 5 V and 3.3 V PCI slots (universal version P584U). - **Optional Isolation and Conversion:** Compatible with the RS4232-4 isolation box for converting RS232 signals to isolated RS232/RS422/RS485 interfaces. - **Compact Form Factor:** Designed for standard PCI slots with a small footprint suitable for industrial and embedded applications.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Each port is fully 16550A UART compatible, supporting standard RS232 signals (TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND). - **Universal PCI Interface:** Compatible with both 3.3V and 5V 33MHz PCI slots, ensuring broad motherboard compatibility. - **Plug & Play Configuration:** Automatic IRQ and I/O address mapping assigned by PCI BIOS; no manual configuration required. - **High-Speed Serial Communication:** Supports baud rates from 50 to 115,200 bps per port. - **Surge Protection:** Integrated surge protection on TXD/RXD lines for enhanced reliability in industrial environments. - **16550A-Compatible UARTs:** Each port includes a 16-byte FIFO buffer for efficient data handling and reduced CPU load. - **Broad OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/7/8/10, Linux, and SCO OpenServer. - **Multi-Card Support:** Up to two P584U cards can be installed per system, providing up to eight serial ports. - **Flexible Connector Options:** Standard A404 cable (DB37F to 4×DB9M) included; optional A400 cable (DB37F to 4×DB25M) available. - **Industrial-Grade Design:** Built with high-quality components and designed for continuous operation in demanding environments.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Each port is fully 16550A UART compatible, providing reliable asynchronous serial communication. - **High Compatibility:** Supports 3.3V and 5V PCI bus systems, ensuring broad compatibility with modern and legacy PCs. - **Plug & Play Configuration:** Automatic IRQ and I/O address mapping assigned by PCI BIOS, eliminating manual configuration. - **Surge Protection:** Integrated surge protection on TXD and RXD lines enhances reliability in industrial environments. - **Flexible Power Supply:** Operates using only the 5V power rail from the PCI slot—no external power required. - **Multi-OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/7/8/10, Linux, SCO OpenServer, and UNIX systems. - **16550A-Compatible UARTs:** Each port includes a 16-byte FIFO buffer for efficient data handling and reduced CPU load. - **High-Speed Data Transmission:** Supports baud rates from 50 to 115,200 bps per port. - **Shared IRQ Capability:** Allows multiple cards to share a single IRQ, supporting up to two cards per system. - **Compact Design:** Small form factor (122 × 101 mm) suitable for standard PCI slots. - **Included Cable Assembly:** DB37 female to 4 × DB9 male breakout cable (A404); optional DB25 male cable (A400) available. - **Industrial-Grade Reliability:** Designed for continuous operation in environments with wide temperature and humidity ranges.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Provides four fully functional RS232 serial ports via a single PCI slot. - **5V Power on Pin 9:** Each port supplies 5V DC on the RI (Ring Indicator) pin, enabling direct powering of external serial devices such as barcode scanners, readers, or handheld terminals. - **Intelligent PCI Interface:** Utilizes an intelligent 16550A-compatible serial communication controller with 16-byte FIFO buffers for efficient data handling and reduced CPU load. - **Plug & Play Configuration:** Automatic IRQ and I/O address assignment by PCI BIOS; no manual configuration required. - **16550A UART Compatibility:** Ensures compatibility with standard serial communication software and operating systems. - **Surge Protection:** Built-in surge protection on TXD and RXD signal lines enhances reliability in industrial environments. - **Universal PCI Bus Support:** Compatible with both 3.3V and 5V PCI slots operating at 33 MHz. - **High-Speed Communication:** Supports baud rates from 50 bps up to 115,200 bps per port. - **Multi-OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/7/8/10, Linux, UNIX, and SCO OpenServer. - **Compact Design:** Small form factor (120 mm × 100 mm) suitable for standard desktop and industrial PCs. - **Shared IRQ Capability:** Supports IRQ sharing among multiple PCI cards, optimizing system resource usage. - **External Cable Options:** Includes DB37 female to 4×DB9 male cable (DB25 male optional).

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Each port is 16550A-compatible, supporting buffered transmit and receive channels with 16-byte FIFOs. - **High-Speed Communication:** Software-programmable baud rates up to 115.2 Kbps (1.8432 MHz crystal) or up to 921.6 Kbps (14.7456 MHz crystal). - **Plug & Play PCI Interface:** Fully compliant with PCI Local Bus Specification Rev. 2.1. Automatic resource assignment (I/O address, IRQ) by PCI BIOS. - **Shared Interrupt Support:** One sharable IRQ mapping for all ports, reducing system resource usage. - **Flexible I/O Mapping:** 6 × 8-byte I/O address blocks assigned by PCI BIOS. - **Universal PCI Compatibility:** Operates in both 5V and 3.3V PCI slots (universal card design). - **Comprehensive OS Support:** Drivers available for DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer. - **Expansion Connectivity:** Includes a DB37 female connector on the card, with an expansion cable (DB37F to 4×DB9M or optional 4×DB25M). - **Multi-Card Support:** Up to two P984 cards can be installed per system, providing up to eight serial ports. - **Flow Control Options:** Supports both hardware (RTS/CTS) and software (Xon/Xoff) flow control. - **Compact Design:** Optimized for industrial and embedded PC applications requiring multiple serial interfaces.

Manufacturer: Rayon

Category: RS232 4-Ports

- **PCI Express x1 Compliant:** Fully compatible with PCI Express x1 interface, ensuring high‑speed data transfer and broad system compatibility. - **Four Independent RS‑232 Ports:** Provides four serial communication channels via a single DB44 female connector, expandable through a breakout cable. - **Wide Baud Rate Range:** Supports baud rates from **150 bps to 921.6 Kbps**, suitable for a wide range of serial devices. - **128‑Byte FIFO Buffer:** Each port includes a 128‑byte FIFO buffer for efficient data handling and reduced CPU load. - **Hardware and Software Flow Control:** Supports RTS/CTS (hardware) and Xon/Xoff (software) flow control for reliable data transmission. - **Full Modem Control Signals:** Includes TxD, RxD, RTS, CTS, DTR, DSR, DCD, and GND signals for full RS‑232 compliance. - **Low‑Profile Design:** Compact 67.2 × 104.8 mm form factor suitable for small‑form‑factor PCs and embedded systems. - **Industrial Temperature Range:** Operates reliably from **‑40°C to +75°C**, with storage capability up to +85°C. - **High ESD Protection:** Meets IEC 61000‑4‑2 standards with **15 kV air discharge** and **8 kV contact discharge** protection. - **LED Indicators:** Each port features dual LEDs—green for transmit (TX) and amber for receive (RX)—for real‑time communication status monitoring. - **Low Power Consumption:** Operates at **835 mA @ 3.3 VDC**, requiring only the PCIe slot power supply. - **Rugged Industrial Design:** Built for long‑term reliability in harsh environments, with 5‑year warranty coverage.

Manufacturer: JS Automation

Category: RS232 4-Ports

- **PCI Express x1 Interface:** Fully compliant with PCI Express x1 specification, ensuring compatibility with modern PC and industrial computer platforms. - **Four Isolated RS‑232 Ports:** Provides four independent RS‑232 serial channels through a single DB44 connector, each isolated to 3 kV for enhanced protection against ground loops and electrical surges. - **High Baud Rate Support:** Configurable baud rates from 150 bps up to 921.6 Kbps, suitable for a wide range of serial communication devices. - **128‑Byte FIFO Buffer:** Each port includes a 128‑byte FIFO for efficient data handling and reduced CPU overhead during high‑speed communication. - **Hardware and Software Flow Control:** Supports RTS/CTS (hardware) and Xon/Xoff (software) flow control for reliable data transmission. - **Low‑Profile Form Factor:** Compact 67.2 × 136.8 mm design fits small‑form‑factor PCs and embedded systems. - **3 kV Isolation Protection:** Electrical isolation between ports and host system enhances safety and prevents damage from transient voltages. - **LED Indicators:** Individual TX (green) and RX (amber) LEDs per port provide real‑time transmission and reception status. - **Wide Temperature Range:** Operates reliably from ‑40 °C to +75 °C, suitable for harsh industrial environments. - **High ESD Immunity:** Meets IEC 61000‑4‑2 standards with 15 kV air and 8 kV contact discharge protection. - **Energy Efficient:** Operates on 3.3 V DC with a typical current draw of 1,150 mA. - **Long‑Term Reliability:** Backed by a 5‑year manufacturer warranty.

Manufacturer: JS Automation

Category: RS232 4-Ports

- **PCI Express x1 Compliant:** Fully compatible with PCI Express x1 interface, ensuring high-speed data transfer and broad system compatibility. - **Four RS-232 Ports:** Provides four independent RS-232 serial communication channels via a single DB44 connector. - **High Surge and ESD Protection:** - Surge protection up to 6 kV (signal lines, –S model only). - ESD protection: 15 kV (air discharge), 8 kV (contact discharge). - **Wide Baud Rate Range:** Supports baud rates from 150 bps to 921.6 Kbps, suitable for a wide variety of serial devices. - **128-Byte FIFO Buffer:** Ensures smooth data transmission and reception with minimal CPU overhead. - **Flow Control Support:** Hardware (RTS/CTS) and software (Xon/Xoff) flow control supported for reliable communication. - **Low Profile Design:** Compact form factor (67.2 x 104.8 mm) suitable for small form factor PCs and embedded systems. - **Full Modem Control Signals:** Provides DCD, DSR, DTR, RTS, CTS, and DCD signals for full modem compatibility. - **LED Indicators:** - Green LED for TX (transmit activity). - Amber LED for RX (receive activity). - **Industrial-Grade Reliability:** Designed for continuous operation in harsh environments with extended temperature and humidity tolerance. - **Power Efficiency:** Operates on 3.3 VDC with a current draw of 835 mA. - **Long-Term Warranty:** Backed by a 5-year manufacturer warranty.

Manufacturer: Rayon

Category: RS232 4-Ports

- **PCI Express x1 Compliant:** Fully compatible with PCI Express x1 interface, ensuring high‑speed data transfer and broad system compatibility. - **Four RS‑232 Serial Ports:** Provides four independent RS‑232 communication channels via a single DB44 connector. - **High Isolation and Surge Protection:** - 3 kV serial isolation between ports and system bus. - 6 kV surge protection on signal lines (specific to the “‑SI” model). - **Wide Baud Rate Range:** Supports baud rates from 150 bps up to 921.6 Kbps, accommodating a wide range of serial devices. - **128‑Byte FIFO Buffer:** Large FIFO buffer per port for efficient data handling and reduced CPU load. - **Flow Control Support:** Hardware (RTS/CTS) and software (Xon/Xoff) flow control for reliable data transmission. - **Low‑Profile Design:** Compact PCB (67.2 × 136.8 mm) suitable for small‑form‑factor PCs and embedded systems. - **LED Indicators:** - Green LED for TX (transmit activity). - Amber LED for RX (receive activity). - **Industrial‑Grade Protection:** - ESD protection: 15 kV (air), 8 kV (contact). - Surge protection: 6 kV (signal lines, SI model). - Isolation: 3 kV between serial ports and host system. - **Wide Operating Temperature:** ‑40 °C to +75 °C for reliable operation in extreme environments. - **Power Efficiency:** Operates from 3.3 V DC with a typical current draw of 1,150 mA. - **Long‑Term Reliability:** Backed by a 5‑year manufacturer warranty.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Provides four fully functional RS232 serial ports, each capable of independent configuration and operation. - **5V Power Output on Pin 9:** Supplies 5V DC power through pin 9 of each DB9 connector, ideal for powering POS peripherals such as barcode scanners, receipt printers, or card readers. - **Low Profile PCIe Design:** Compact 92 × 69 mm form factor suitable for small form factor PCs, embedded systems, and rackmount servers. - **High-Performance Moschip MCS9904 Controller:** Each port is managed by a 16950A-compatible UART with 128-byte transmit and receive FIFOs, ensuring efficient data handling and reduced CPU load. - **Flexible Baud Rate Support:** Configurable baud rates from 50 bps up to 115,200 bps per port. - **Plug-and-Play Configuration:** I/O address, memory mapping, and IRQ assignments are automatically managed by the PCI BIOS, simplifying installation and avoiding resource conflicts. - **Comprehensive OS Support:** Compatible with Windows 2000, XP, Vista, Windows 7, and Linux distributions. - **Industrial-Grade Reliability:** Designed for continuous operation in industrial and commercial environments with wide temperature and humidity tolerance. - **Expandable Product Family:** Compatible with other Rayon PCIe serial cards (A102, A132, A112, A114, A134, A168, A134I, A124I) for scalable serial communication solutions.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent RS232 Ports:** Provides four fully functional RS232 serial channels through RJ45 connectors, enabling simultaneous multi-device communication. - **PCI Plug & Play Interface:** Fully compliant with PCI Local Bus Specification Rev. 2.1, supporting automatic resource allocation (I/O address and IRQ) by the system BIOS. - **Intelligent Serial Controller:** Incorporates a 16C550A-compatible UART with 16-byte transmit and receive FIFOs, reducing CPU load and improving throughput. - **High-Speed Communication:** Supports baud rates up to 115.2 Kbps with a 1.8432 MHz crystal or up to 921.6 Kbps with a 14.7456 MHz crystal. - **Flexible Flow Control:** Supports both hardware (RTS/CTS) and software (Xon/Xoff) flow control. - **Universal PCI Compatibility:** Operates in both 5V and 3.3V PCI slots, ensuring compatibility with a wide range of PC architectures. - **Multi-OS Driver Support:** Compatible with Windows 95/98/Me, Windows NT, Windows 2000/XP, DOS, Linux, and SCO OpenServer. - **Expandable and Configurable:** Supports multiple card installations (up to two per system) with jumper-based card numbering for consistent COM port assignment. - **Industrial-Grade Reliability:** Designed for continuous operation in industrial environments with robust electrical design and optional isolation via external RS4232 converter boxes. - **RJ45 Connectivity:** Compact RJ45 connectors simplify cabling and integration in structured wiring environments.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Multi‑Interface Support:** Provides four independent serial channels — three RS‑232 ports and one RS‑422 port — through RJ‑45 connectors. - **PCI Plug‑and‑Play Architecture:** Fully compliant with PCI Local Bus Specification Rev. 2.1. Automatic resource assignment (I/O address, IRQ) by BIOS; no manual configuration required. - **Intelligent Serial Controller:** Each port uses a 16C550A‑compatible UART with 16‑byte transmit and receive FIFOs, reducing CPU interrupts and improving throughput. - **High‑Speed Communication:** Supports baud rates up to 115.2 kbps (standard 1.8432 MHz crystal) or up to 921.6 kbps with optional 14.7456 MHz crystal. - **Flexible Flow Control:** Hardware (RTS/CTS) and software (XON/XOFF) flow control supported. - **Universal PCI Voltage Support:** Operates in both 5 V and 3.3 V PCI slots (Universal PCI design). - **Compact RJ‑45 Connectivity:** RJ‑45 connectors simplify cabling and allow modular connection to external devices or patch panels. - **Driver Support for Multiple OS:** Compatible with Windows 95/98/Me, Windows NT, Windows 2000/XP, DOS, Linux, and SCO OpenServer. - **IRQ Sharing Capability:** Supports interrupt sharing among multiple PCI cards, enabling multi‑card installations. - **Industrial Reliability:** Designed for continuous operation in PC/AT industrial systems; optional isolation and surge protection available via external RS4232 isolation boxes. - **Expandable System Integration:** Multiple PCIPORT cards can coexist in one system, supporting up to 8 or 16 serial ports depending on configuration.

Manufacturer: Rayon

Category: RS232 4-Ports

- **Four Independent Serial Ports:** Provides 4 communication channels — 2×RS‑422 and 2×RS‑232 — via RJ‑45 connectors. - **PCI Plug‑and‑Play Architecture:** Fully compliant with PCI Local Bus Specification Rev. 2.1. Automatic resource assignment (I/O address, IRQ) by PCI BIOS eliminates manual configuration. - **Intelligent Serial Controller:** Each port uses a 16C550A‑compatible UART with 16‑byte transmit and receive FIFOs, reducing CPU interrupt load and improving throughput. - **High‑Speed Operation:** Supports baud rates up to 115.2 kbps with a 1.8432 MHz crystal or up to 921.6 kbps with a 14.7456 MHz crystal. - **Flexible Interface Configuration:** Supports both RS‑232 and RS‑422 signaling standards. RS‑422 ports can be configured for full‑duplex differential communication. - **RJ‑45 Connector Interface:** Compact modular connectors simplify cabling and integration in structured wiring environments. - **Universal PCI Compatibility:** Operates in both 5 V and 3.3 V PCI slots at 33 MHz, suitable for legacy and modern PC/AT systems. - **Driver Support for Multiple Operating Systems:** Compatible with Windows 95/98/Me, Windows NT 4.0, Windows 2000/XP, DOS, Linux, and SCO OpenServer. - **Interrupt Sharing:** Supports IRQ sharing among multiple PCI cards, allowing installation of multiple PCIPORT cards in one system. - **Hardware Flow Control:** Supports both software (XON/XOFF) and hardware (RTS/CTS) flow control. - **Industrial‑Grade Reliability:** Designed for continuous operation in industrial and embedded environments with robust electrical design and optional isolation via external RS4232 boxes.

Manufacturer: Rayon

Category: RS232 4-Ports