PEX4S953 - Startech 4 PORT PCI EXPRESS RS232 SERIAL CONTROLLER | Aztek Computers
29+Years
SKU: NJV2LYV9QU |  Mfg. Part: PEX4S953  | UPC: 065030888257  | 
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PEX4S953 - Startech 4 PORT PCI EXPRESS RS232 SERIAL CONTROLLER CARD W/16950 UART/ASIX AX99100 - BI-D

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Condition: New

$156.61  $211.42
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Product Overview

This PCI Express RS232 serial adapter card lets you add four RS232 (DB9) serial ports to your computer through a PCI Express (PCIe) slot - The replacement for the PEX4S952 serial card enables you to interact with serial devices such as printers and modems - The 4-port serial PCIe card provides a max baud rate of up to 921.6Kbps and 256-byte FIFO cache with the Asix AX99100 chipset - The full profile PCI E serial card is easy to integrate into mixed environments with support for Windows and Linux

Expert Overview

The STARTECH PEX4S953 is a PCI Express RS232 serial adapter card designed to expand connectivity for business and IT environments. This card adds four RS232 (DB9) serial ports to a computer via an available PCI Express slot. It is suitable for organizations that need to integrate or maintain legacy serial devices such as printers, modems, or specialized industrial equipment with modern systems. The card features a 16950 UART and Asix AX99100 chipset, supporting a maximum baud rate of 921.6Kbps per port and a 256-byte FIFO cache. This enables reliable, high-speed bidirectional communication. With support for both Windows and Linux operating systems, the PEX4S953 offers a practical solution for mixed IT infrastructures requiring robust serial port expansion.

Technical Specifications

IRECTIONAL SPEEDS 921.6KBPS/PORT / 256 BYTE FIFO / 9TH DATA BIT - PIN 9 PWR OUT

Product Details

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  • STARTECH
  • PEX4S953
  • B085G1MLH7
  • 065030888257
  • New
  • 48.57 lbs
  • 9 X 2 X 6
  • Today - Aug 14, 2026
  • Jan 11, 2024
  • Yes
  • TW
Product Identifiers: Brand: Startech • Part #: PEX4S953 • UPC: 065030888257 • ASIN: B085G1MLH7 • Category: Port Expansion Cards • TAA Compliant

Frequently Asked Questions

What type of slot is required for this serial adapter card?

This serial adapter card requires an available PCI Express (PCIe) slot in your computer for installation.

What operating systems are supported by this card?

The card is designed to integrate into mixed environments and supports both Windows and Linux operating systems.

What is the maximum baud rate supported per port?

Each port on this 4-port serial PCIe card supports a maximum baud rate of up to 921.6Kbps.

Does this card offer any FIFO cache?

Yes, the card provides a 256-byte FIFO cache, which helps manage data flow efficiently during serial communications.

PEX4S953 - Startech 4 PORT PCI EXPRESS RS232 SERIAL CONTROLLER CARD W/16950 UART/ASIX AX99100 - BI-D

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Reviews for Startech PEX4S953

$156.61