PCI Express to 8-Port RS422/485 Serial Board w/EXAR Chip

Windows 10 compatible PCIe to RS422/485 Card

This PCIe Add on Card extends your systems RS422 or RS485 serial device connections by 8! Using this PCI Express Card interface and a DB44 to DB-9(8x) octopus cable connection enables both ESD and Surge protections to you serial devices. All cable connections are screw lock mechanisms for secure point to point contact.

  • Uses DB44 to DB9 octopus cable connection through the Card bus connection
  • Enables ESD and Surge protection to connected serial signal devices
  • Easily installed and configured in your system
  • Each port is with 256 bytes FIFO for transmit and receive


Not in stock - Backorder allowed

Model No. CG-8PCIe-I

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Industrial PCIe Card to RS422/485 Serial

PCI Express 8-port industrial serial I/O card is a plug & play high-speed serial I/O expansion card for the PCI Express bus. Connecting to a PCI Express bus on your computer, the PCI Express 8-port industrial serial I/O card instantly adds eight RS-422/485 serial I/O communication ports to your system.

Designed to support industrial high-speed serial COM port data rates up to 921.6K bps. Each serial port is fully compatible with 16C550 UART, with enhanced feature of 256 bytes TX and RX FIFO buffer for higher performance.

The PCI Express 8-port serial I/O card is an advanced and high efficient solution for serial data communication and industrial automation applications.

PCI Express Serial I/O Features

  • PCIe 2.0 Gen 1 compliant
  • PCIe x1 Lane compliant
  • 16C550 compatibility
  • 256 bytes receive FIFO buffer
  • 256 bytes transmit FIFO buffer for high speed data throughput
  • Automatic RTS/CTS or DTR/DSR hardware flow control with programmable hysteresis
  • Automatic Xon/Xoff software flow control
  • Drivers provided for Windows and Linux O.S
  • Wide ambient temperature operation 0°C to 60°C (32°F to 140°F)
  • CE, FCC approval
  • Supports eight high speed RS-422/485 serial ports with data transfer rate up to 921.6 Kbps
  • Provides 15KV ESD protection and 600W surge protection for all serial signals
  • One DB-44 high density female connector on board
  • Provides one DB-44 to eight male DB-9 octopus cable. Cable length: 100 cm
  • RS-422 data signals: TxD-, TxD+, RxD+, RxD- , GND
  • RS-485 data signals: TxD-, TxD+, RxD+, RxD- , GND (4 wire) and data-, data+, GND (2 wire)
  • Works with Windows 10 32-bit/64-bit, 8.1, 8, 7 32-bit/64-bit, and Linux


  • Bus Connection: PCI Express; Single-Lane (x1)
  • Interface: RS-422 / RS-485
  • Chipset: EXAR XR17V358
  • Support Plug and Play
  • Protection: 15KV ESD protection and 600W surge protection for all serial signals
  • IRQ & I/O address assigned by the system BIOS
  • Data Bits: 5, 6, 7, 8
  • Parity: None, Odd, Even, Mark , Space
  • Stop Bits: 1, 1.5 , 2
  • Operating Temperature: 0°C to 60°C
  • Storage Temperature: -40°C to 85°C
  • Humidity: 0 to 80% RH. Non-condensing
  • Safety Approvals: CE, FCC

Package Contents

  • PCI Express Card
  • 100 cm Octopus Cable
  • Driver Disc

Product Specifications

Product Type

Add-on Cards > PCI Card > Serial



OS Support

Linux, Win 10, Win 7, Win 8, Win 8.1

Serial Attributes
Serial Standards


Serial Ports


Screw Lock Compatible



Black, Green

Other Data

DB44, DB9 Male




1.337 lbs


8.250 × 5.625 × 2.250 in

UPC: 736983902801

Product Documentation & Drivers

Need drawings, CAD files, or other compliance documentation? Click HERE

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