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PCI MCS9865 4-port DB9 RS232 Serial Card with 16550 UART

  • Product Code: PCI-4S-9865
  • Availability: In Stock
  • Ships: Typically within 3 Business Days
  • Guarantee: 30-day Return and Money Back


The PCI-4S-9865 4-port 16550 Serial Card can be installed in an available PCI slot to add four RS232 serial ports to your system. A cost-effective solution for connecting any new or legacy serial device, with data transfer rates of up to 115.2 Kbps. The adapter card supports IRQ sharing and is perfect for connecting serial modems, POS devices, PDAs, digital cameras, printers, ISDN terminal adapters and more to your system.


  • Adds 4 (9-pin) RS-232 serial ports to your PCI enabled system
  • Compliant with PCI Local Bus Specification,Revision 2.3
  • Supports 4 x UART serial ports
  • Easy Plug and Play
  • Automatically selects IRQ & I/O address
  • Built-in 16C450/550 compatible UART
  • On chip 256 byte FIFOs in transmit and receive path of each serial port
  • Serial data transfer rate up to 115200bps
  • Works with modems, PDAs, and high-speed serial devices
  • Full support for DOS and Windows based software


  • Chipset: ASIX (Moschip) MCS9865
  • Compliant with PCI Local Bus Specification, Revision 2.3
  • PCI IRQ sharing feature reduces IRQ conflicts
  • Ports: 4, 9-pin, RS-232, DB9, serial ports, Male
  • UART: 16550
  • Function
    • Support IRQ share for PCI
    • Built-in 16C450/550 compatible UART
    • Automatically selects IRQ and I/O address
  • System: Windows 98se/ ME / NT 4. 0/ Server 2000 / XP / Vista / Server 2008 / Win 7 / Win 8 , Linux
  • Environmental conditions:
    • Operating temperature: 32 to 122 degrees F
    • Operating humidity: 20% to 80% RH
    • Storage temperature: -4 to 140 degrees F
    • Storage humidity: 10% to 90% RH
  • Certifications/Standards: FCC, CE, RoHS

Package Contents

  • 1 x PCI MCS9865 4-port DB9 RS232 Serial Card
  • 1 x User Manual
  • 1 x Driver CD
  • 1 x Low profile bracket

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