- **Eight RS232 Ports:** Provides eight independent serial communication channels via a single PCI slot. - **16550A-Compatible UARTs:** Each port includes a 16C550A-compatible controller 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 (1.8432 MHz crystal) or up to 921,600 bps with optional 14.7456 MHz crystal. - **Plug-and-Play PCI Interface:** Fully compliant with PCI Local Bus Specification Rev. 2.1; automatic resource allocation (I/O address, IRQ) by PCI BIOS. - **IRQ Sharing:** Supports sharable interrupt mapping for multiple PCI cards in one system. - **Single 5V Power Operation:** Designed for 5V, 33 MHz PCI slots; universal card versions support 3.3V operation. - **Compact Design:** 141 mm × 106 mm PCB footprint. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer. - **Included Cable Assembly:** DB62 female connector on the card; includes R804 cable (DB62 male to 8×DB9 male). Optional R801 cable (DB62 to 8×DB25 male) available. - **Expandable System:** Supports up to two cards per system (16 ports total). - **Optional Isolation:** Can be connected to the RS4232-8 isolation box via R803 cable for isolated RS232/RS422/RS485 operation. - **Industrial Reliability:** Designed for continuous operation in PC/AT industrial environments.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Each port can be individually configured for RS232 or RS422 operation, supporting full-duplex communication. - **Universal PCI Interface:** Compatible with both 5V and 3.3V PCI slots (33 MHz), ensuring broad system compatibility. - **16550A-Compatible UARTs:** Each channel integrates a 16C550A-compatible UART with 16-byte transmit and receive FIFOs, minimizing CPU load and improving throughput. - **Automatic Plug & Play Configuration:** IRQ and I/O address mapping are automatically assigned by the PCI BIOS, eliminating manual configuration. - **Surge Protection:** Built-in surge protection on TXD/RXD lines enhances reliability in industrial environments. - **Flexible Power Design:** Operates on a single 5V power supply for both RS232 and RS422 modes. - **High-Speed Data Transmission:** Supports baud rates from 50 bps up to 115,200 bps (standard crystal 1.8432 MHz). - **Multi-OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, SCO OpenServer, and UNIX systems. - **Expandable System Integration:** Supports up to two P5188U cards per system, providing up to 16 serial ports. - **Comprehensive Driver Support:** Includes drivers and installation utilities for all major operating systems, with detailed configuration options for multi-card setups. - **Industrial-Grade Reliability:** Designed for continuous operation in demanding environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Each port can be configured as RS232 or RS485, providing maximum flexibility for mixed communication environments. - **Universal PCI Interface:** Supports both 5 V and 3.3 V PCI slots (33 MHz), ensuring compatibility with a wide range of motherboards. - **Auto Data Direction Control (ADDC):** Built-in automatic data direction management for RS485 communication eliminates the need for manual RTS control. - **Plug & Play Configuration:** IRQ and I/O address mapping are automatically assigned by the PCI BIOS, simplifying installation and avoiding resource conflicts. - **High-Speed Communication:** Each port supports baud rates from 50 bps up to 115,200 bps (standard), with optional support up to 921.6 kbps using a 14.7456 MHz crystal. - **16550A-Compatible UARTs:** Each port uses a 16550A-compatible UART with 16-byte transmit and receive FIFOs for efficient data buffering and reduced CPU load. - **Operating System Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, and SCO OpenServer. - **Multi-Card Support:** Up to two P5288U cards can be installed in a single system, providing up to 16 serial ports. - **Comprehensive Driver Package:** Includes drivers and installation utilities for multiple operating systems, with detailed configuration options for COM port numbering and IRQ sharing. - **Industrial-Grade Reliability:** Designed for continuous operation in demanding environments, with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Each port can be configured individually for RS422 or RS485 operation. - **Auto Data Direction Control (ADDC):** Built-in automatic data direction control for RS485 half-duplex communication eliminates the need for manual RTS signal handling. - **16550A-Compatible UARTs:** Each port uses a 16550A-compatible serial communication controller with 16-byte FIFO buffers for efficient data handling. - **High-Speed Communication:** Supports baud rates from 50 bps up to 115,200 bps (standard 1.8432 MHz clock). - **Universal PCI Interface:** Compatible with both 5V and 3.3V PCI slots (33 MHz bus frequency). - **Plug & Play Configuration:** IRQ and I/O address mapping automatically assigned by PCI BIOS; no manual configuration required. - **Single 5V Power Supply:** Operates entirely from the PCI bus 5V supply—no external power required. - **Multi-OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, and SCO OpenServer. - **Compact Design:** 152 × 106 mm (6.0 × 4.2 inches) PCB form factor. - **Flexible Connector Options:** Supplied with DB62M-to-8×DB9M cable (R804) or optional DB62M-to-8×DB25M cable (R801). - **Shared IRQ Support:** Allows multiple cards to share a single IRQ line for efficient system resource utilization. - **Maximum Two Cards per System:** Supports up to 16 serial ports in a single system. - **Industrial-Grade Reliability:** Designed for continuous operation in demanding environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Provides 8 asynchronous serial communication channels per card. - **Mixed Interface Configuration:** - Ports A–D: Fixed RS232 interface. - Ports E–H: Independently selectable RS232, RS422, or RS485 interfaces. - **Universal PCI Compatibility:** Supports both **5V and 3.3V PCI slots** (33 MHz), ensuring compatibility with legacy and modern systems. - **Intelligent Serial Controller:** Each port uses a **16550A-compatible UART** with 16-byte FIFO buffers, reducing CPU load and improving throughput. - **Auto-Data-Direction-Control (ADDC):** Built-in automatic data direction control for RS485 half-duplex communication eliminates the need for manual RTS signal handling. - **Plug & Play Resource Allocation:** IRQ and I/O address mapping are automatically assigned by the PCI BIOS, simplifying installation and avoiding conflicts. - **High-Speed Communication:** Supports baud rates from **50 bps to 115,200 bps** (standard) and up to **921.6 kbps** with optional higher-frequency crystal. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, and SCO OpenServer. - **Flexible Connector Options:** Ships with a **DB62 male to 8×DB9 male cable (R804)** or optional **DB62 to 8×DB25 male cable (R801)**. - **IRQ Sharing Capability:** Supports shared interrupt operation, allowing multiple PCI cards to coexist efficiently. - **Industrial-Grade Reliability:** Designed for continuous operation in environments from 0°C to 55°C with up to 95% relative humidity.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent RS232 Ports:** Each port supports standard RS232C signaling with full modem control lines (TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND). - **16550A-Compatible UARTs:** Each channel includes a 16-byte FIFO buffer for efficient data handling and reduced CPU load. - **Universal PCI Interface:** Compatible with both 5V and 3.3V PCI bus slots (33 MHz), ensuring broad motherboard compatibility. - **Plug & Play Configuration:** Automatic IRQ and I/O address assignment by PCI BIOS; no manual configuration required. - **Single 5V Power Operation:** The card draws power directly from the PCI slot, simplifying installation and ensuring stable operation. - **High-Speed Communication:** Supports baud rates from 50 to 115,200 bps per port. - **Surge Protection:** Built-in surge protection on TXD and RXD lines enhances reliability in industrial environments. - **Flexible Connectivity:** Includes a DB62 female connector with an external breakout cable (DB62M to 8×DB9M or optional 8×DB25M). - **Multi-OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, and SCO OpenServer. - **IRQ Sharing:** Supports shared interrupt operation for multi-card systems. - **Scalable System Integration:** Up to two P5588U cards can be installed per system, providing up to 16 serial ports. - **Compact Design:** Optimized PCB layout for efficient airflow and minimal footprint in standard PC enclosures.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Six ports (A–F) selectable between RS232 and RS422; two ports (G–H) selectable between RS232 and RS485. - **Flexible Interface Configuration:** Each port can be independently configured for the desired serial standard, enabling mixed-mode operation. - **Auto Data Direction Control:** Built-in automatic data direction control for RS485 communication eliminates the need for manual RTS signal handling. - **Universal PCI Compatibility:** Supports both 5V and 3.3V PCI slots (33 MHz), ensuring compatibility with a wide range of PC architectures. - **Plug & Play Resource Allocation:** IRQ and I/O address mapping automatically assigned by PCI BIOS; supports shared IRQ operation. - **High-Speed Communication:** Programmable baud rates from 50 bps up to 115,200 bps (standard 1.8432 MHz clock). - **16550A-Compatible UARTs:** Each port uses a 16550A-compatible UART with 16-byte FIFO buffers for efficient data handling. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/Me/NT/2000/XP/2003/Vista, Linux, and SCO OpenServer. - **Industrial-Grade Design:** Operating temperature range 0°C–55°C; humidity tolerance up to 95% RH. - **Expandable System Integration:** Supports up to two cards per system, providing a total of 16 serial ports. - **Single 5V Power Supply:** Simplified power requirements—no external power needed for serial operation. - **Included Connection Cable:** DB62 male to 8×DB9 male cable (DB25 version available on request).

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Seven ports configurable as RS232 or RS422, and one port configurable as RS232 or RS485. - **Universal PCI Interface:** Compatible with both 5V and 3.3V PCI slots (33 MHz), ensuring broad system compatibility. - **Automatic Resource Allocation:** IRQ and I/O mapping automatically assigned by PCI BIOS through Plug & Play functionality. - **Auto Data Direction Control:** Built-in automatic data direction control for RS485 communication, eliminating the need for manual RTS signal handling. - **High-Speed Communication:** Supports baud rates from 50 bps up to 115,200 bps per port (software programmable). - **16550A-Compatible UART:** Each port uses a 16550A-compatible UART with 16-byte FIFO buffers for efficient data handling. - **Flexible Connector Options:** Supports DB25 or DB9 male connectors via included expansion cable. - **Operating System Support:** Fully compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, and SCO OpenServer. - **Plug & Play Installation:** No manual configuration required; resources are automatically assigned by the PCI BIOS. - **Multi-Card Support:** Up to two P5788U cards can be installed per system, providing up to 16 serial ports. - **Industrial Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Four ports (A–D) support RS485 only; four ports (E–H) are independently selectable for RS232, RS422, or RS485 operation. - **Universal PCI Interface:** Compatible with both 5V and 3.3V PCI slots (33 MHz), ensuring broad motherboard compatibility. - **5V Power-Only Design:** Operates solely from the 5V PCI rail, simplifying power requirements and improving stability. - **Auto-Data-Direction-Control for RS485:** Built-in automatic data direction control eliminates the need for manual RTS signal management in half-duplex RS485 communication. - **Plug & Play Resource Assignment:** IRQ and I/O address mapping are automatically assigned by the PCI BIOS, supporting shared IRQ configurations. - **High-Speed Serial Communication:** Each port supports baud rates from 50 to 115,200 bps (standard) and up to 921.6 kbps with optional higher-frequency crystal. - **16550A-Compatible UARTs:** Each port uses a 16550A-compatible UART with 16-byte FIFO buffers for efficient data handling and reduced CPU load. - **Comprehensive OS Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista/7, Linux, SCO OpenServer, and UNIX systems. - **Flexible Connector Options:** Includes DB62M-to-8×DB9M cable (R804) or optional DB62M-to-8×DB25M cable (R801). - **Scalable System Integration:** Supports up to two P5888U cards per system, providing up to 16 serial ports. - **Industrial Reliability:** Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed

- **Eight Independent Serial Ports:** Four dedicated RS422 ports (A–D) and four selectable RS232/RS422/RS485 ports (E–H), each configurable independently. - **Universal PCI Compatibility:** Supports both 5V and 3.3V PCI slots (33 MHz), ensuring compatibility with legacy and modern systems. - **5V Power Supply Only:** Operates exclusively on a single 5V power rail, simplifying system integration and ensuring stable operation. - **High-Speed Communication:** Each port supports baud rates from 50 to 115,200 bps, with 16550A-compatible UARTs and 16-byte FIFO buffers for efficient data handling. - **Auto-Data-Direction-Control (ADDC):** Built-in automatic data direction control for RS485 communication eliminates the need for manual RTS signal management. - **Plug & Play Configuration:** IRQ and I/O address mapping are automatically assigned by the PCI BIOS, supporting shared IRQ operation. - **Multi-OS Driver Support:** Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista, Linux, SCO OpenServer, and UNIX systems. - **Flexible Connector Options:** Includes DB62M-to-8×DB9M cable (R804) or optional DB62M-to-8×DB25M cable (R801). Optional TB485 terminal block adapter available for RS485 wiring. - **Scalable System Integration:** Supports installation of up to two P5988U cards per system, providing up to 16 serial ports. - **Industrial-Grade Design:** Designed for continuous operation in demanding environments with wide temperature and humidity tolerance.

Manufacturer: Rayon

Category: 8-Port 5V Single Mixed