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PCIe x1 MCS9901 2-port DB9 RS232 Serial Adapter Card with 16C950 UART

  • Product Code: PX1-2S-9901
  • Availability: In Stock
  • Ships: Typically within 3 Business Days
  • Guarantee: 30-day Return and Money Back


Based on one of the best known Serial chipset MCS9901 for best performance. Ideal for connecting to modem, cellular phone, PDA, ISDN terminal adapter, satellite receiver, graphic tablet, bar code scanner, label printer, automated teller machine, GPS, finger print identification, Infra-Red transceiver, packet radio, magnetic card reader, Pos devices, multi-modem dail-up server, digital camera, automation interface, and card reader. Keeps old Serial devices alive.


  • PCI Express Base Specification, r1.1 (backwards compatible with PCIe r1.0a)
  • Single-Lane (x1) PCI-Express with transfer rate 2.5Gb/s Full Duplex channel
  • Compatible with Industrial Standard 16C950 UART. On Chip 256-byte Depth FIFO in Transmit.
  • Fast Data Rates up to 230.4 Kbps
  • Support RS-232 Hardware Flow Control
  • Fully Plug & Play compatible


  • Chipset: MCS9901
  • Bus Interface: PCI Exrpess Rev 1.1 x1
  • Connectors: 2 x 9-pin DB-9 RS-232 Serial
  • FIFO: 16 byte
  • Data rate: up to 230.4Kbps
  • Function
    • Support RS-232 Hardware Flow Control
    • Built-in 16C950 UART compatible UART
    • Automatically selects IRQ and I/O address
  • OS Compatibility: Windows 98se/ ME / NT 4. 0/ Server 2000 / XP / Vista / Server 2008 / Win 7 / Win 8 , Linux

Package Contents

  • 1 x MCS9901 2S PCIE Multi-I/O card
  • 1 x User Manual
  • 1 x Driver CD
  • 1 x Low profile bracket

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