StarTech.com 2-Port PCI RS232 Serial Adapter Card - PCI to Dual Serial DB9

StarTech.com PCI2S5502

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Manufacturer Part#  PCI2S5502

Provantage Code:  STRN09V

Condition:  Factory New

  • Product Type: Multiport Serial Adapter
  • Country of Origin: China
  • Limited Warranty: Lifetime
  • Form Factor: Plug-in Card
  • TAA Compliant: No

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StarTech.com PCI2S5502 Specifications

    StarTech.com 2-Port PCI RS232 Serial Adapter Card - PCI to Dual Serial DB9

At a Glance

    • 2 PORT PCI RS232 SERIAL ADAPTER CARD: Controller card w/ 16C550 UART based on ASIX MCS9865, 2x DB9 ports w/bi-directional RS232 speeds up to 115.2Kbps/port, 256 byte FIFO buffer & 9th data bit | Upgraded version of our popular cards PCI2S550_LP & PCI2S550
    • TECH SPECS: Speeds up to 115.2Kbps | 16C550 UART | 256 byte FIFO buffer | 5,6,7,8 and 9 bit character | Even, Odd, No, Space or Mark Parity | Auto IRQ & IO assignment | Supports IRQ Sharing | ASIX MCS9865 Chip
    • VERSATILE APPLICATIONS: Dual Serial Port PCI Card for PCI desktops/servers used in point of sale terminals, PLCs, CNC Machines, control/automation in factories, scientific sensors, medical equipment, scanners, oscilloscope
    • STANDARD PROFILE & LOW PROFILE BRACKET: PCI multiport serial COM card installs using 1x standard bracket (pre-installed) or 2x low profile brackets (incl); Supports Windows 7 and up, Linux 2.6.x to 5.x
    • STARTECH.COM ADVANTAGE: IT professionals choice for over 30 years; PCI RS-232 Serial expansion card is backed for life by StarTech.com, incl. free 24/5 North America based multi-lingual tech support


    This multiport PCI RS232 serial adapter card lets you add two RS232 (DB9) serial ports to your computer through a PCI slot, as if they were native serial ports. The dual port PCI serial card enables you to interact with serial devices, such as card readers, printers, PIN pads, and modems, at speeds of up to 115.2Kbps.

    Maximum Compatibility

    With broad OS support, including for Windows (7 and up), and Linux (2.6.x to 5.x LTS versions only), this 2 port PCI serial card is easy to integrate into mixed environments. The card comes pre-configured with a full-profile bracket, and includes optional low-profile brackets, so installation is easy regardless of the case form factor. This card is a direct replacement for PCI2S550_LP and PCI2S550.

    Experience Optimal Technology

    This PCI to serial adapter supports the following features:

    • Industry standard 16C550 UART compatible
    • Supports baud rate up-to 115.2Kbps
    • 256-byte depth FIFO cache per transmitter and receiver
    • Supports 9, 8, 7, 6, 5 data bits (one per port)
    • Asix MCS9865 chipset
    • Low and full-profile brackets included

    PCI2S5502 is backed by a StarTech.com lifetime warranty with free 24/5 multi-lingual North American based technical support. StarTech.com has been the IT professionals' choice for over 30 years.



    • Serial Protocol RS-232
    • Max Baud Rate 115.2 Kbps
    • Data Bits 5, 6, 7, 8, 9
    • FIFO 256 Bytes
    • Flow Control None, Xon/Xoff, RTS/CTS
    • Parity None, Odd, Even, Space, Mark
    • Stop Bits 1, 1.5, 2

Package Contents

    • PCI2S5502 Multiport Serial Adapter
    • Full Profile Bracket
    • 2 x Low Profile Brackets
    • 1 x Quick-Start Guide

Additional Product Images


Product NameStarTech.com 2-Port PCI RS232 Serial Adapter Card - PCI to Dual Serial DB9
Manufacturer Part NumberPCI2S5502
Product TypeMultiport Serial Adapter
Form FactorPlug-in Card
Host InterfacePCI
Environmentally FriendlyYes
Number of Serial Ports2
Country of OriginChina
Packaged Quantity1
Limited WarrantyLifetime
Product ColorBlack
CompatibilityOS Compatibility
  • Windows 7, 8, 8.1, 10
  • Windows Server 2003, 2008 R2, 2012, 2012 R2, 2016, 2019
  • Linux 2.6.x to 5.x LTS Versions only
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Purchase a minimum of $3,000 of StarTech Products

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