Skip to main content
  • $187.99
  • Free 91-day Returns
  • Sold by Newegg

    Shipped by Newegg

    Price alert

    Best Sellers

    Top Rated
    4 (3,724 total ratings)
    • $202.92
    Hot Seller
    4.5 (9,026 total ratings)
    • $231.64
    Shop it at NeweggBusiness.

    Serial PCIe Card

    • Configurable Power: The Quad-Port PCI Express Serial Adapter Card comes with on-board DIP switches that allow each DB9 serial port to function independently supporting RS-232 RS-422 and RS-485 devices. The LED indicators on the card help you monitor data transmit/receive status effortlessly.
    • Power Flexibility: This serial card features configurable power options including 12V (1.5A per port) 5V (1.5A per port) or no power (RI) over pin 9 which can be set via auxiliary SATA power. Each port can be individually configured for power modes through jumpers providing you with the flexibility you need.
    • Wide Range of Applications: Ideal for various applications such as point-of-sale terminals PLCs factory control and automation systems scientific sensors medical equipment scanners and oscilloscopes this TAA-compliant card is designed to cater to diverse needs. The DB9 ports support screw-locking cables for secure connections.
    • Standard & Low Profile Brackets: The StarTech....
    +
    +
    Overview
    Specs
    Reviews
    See all Q & A

    Any questions? Ask CelesteSM will help you find out quickly.

    Serial PCIe Card

    A versatile solution for adding multiple serial ports to your desktop computer or Small Form Factor (SFF) system the Serial PCIe Card from StarTech.com offers advanced features and functionality to meet a variety of communication needs.

    • Quad-Port Design: Equipped with four DB9 serial ports each port on this PCIe card can operate independently in RS-232 RS-422 or RS-485 mode providing flexibility in connecting different types of serial devices.
    • Configurable Power Options: The card features configurable power options allowing you to choose between 12V (1.5A per port) 5V (1.5A per port) or no power (RI) via auxiliary SATA power ensuring compatibility with a wide range of devices.
    • Wide Range of Applications: Ideal for desktops and servers this PCIe serial card is suitable for various applications such as point-of-sale terminals PLCs factory control and automation scientific sensors medical equipment scanners and oscilloscopes making it a versatile addition to your system.
    • Standard & Low Profile Brackets: The TAA-compliant Serial Card comes with two standard profile brackets pre-installed and includes four low-profile brackets offering compatibility with small form factor desktops and servers for easy installation.
    • Technical Specifications: Powered by the Asix AX99100 Chipset this card is 16C450 and 16C550 UART compatible featuring four 9-pin D-Sub Ports a maximum baud rate of 921.6Kbps per port 256 Byte FIFO COM Retention and support for Windows and Linux operating systems.
    Technical Details:
    • Chipset: Asix AX99100
    • UART Compatibility: 16C450 16C550
    • Ports: 4x 9-Pin D-Sub Ports
    • Max Baud Rate: 921.6Kbps per port
    • FIFO: 256 Bytes
    • Operating Systems: Windows Linux
    • Parity Modes: Odd/Even/Mark/Space/None
    • Data Bits: 5/6/7/8/9
    • Interface: PCIe 2.0 x1
    How to Install:

    Installing the Serial PCIe Card is a straightforward process. Simply insert the card into an available PCIe slot on your desktop computer or SFF system. Use the included brackets based on your system's form factor for a secure fit. Connect your serial devices to the DB9 ports configure the power options as needed and you're ready to enhance your system with additional serial connectivity.

    Frequently Asked Questions: Q: Can I use this card with both RS-232 and RS-485 devices simultaneously?

    A: Yes the Serial PCIe Card allows you to independently configure each DB9 serial port to support RS-232 RS-422 or RS-485 mode enabling you to connect different types of serial devices at the same time.

    Q: Is this card compatible with small form factor desktops?

    A: Yes the card comes with low profile brackets in addition to standard profile brackets making it suitable for installation in small form factor desktops and servers.

    Q: What is the warranty on this product?

    A: The Serial PCIe Card is backed by a 2-year warranty and free lifetime 24/5 multi-lingual technical assistance ensuring peace of mind and reliable support for your communication needs.

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Limited Warranty period (parts): 1 year
    • Limited Warranty period (labor): 1 year
    • Read full details

    Return Policies

      We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2025 and December 31, 2025 you will have until January 31, 2026 to return your product.

    • Return for refund until: January 31, 2026
    • Return for replacement until: January 31, 2026
    • This item is covered by Newegg.com's Extended Holiday Return Policy.
    • Read full return policy for details.

    Manufacturer Contact Info

    LOADING...
    LOADING...