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PCI Express PCIe to 4 Port RS232 DB9 Serial Card MosChip MCS9904

SKU: SY-PEX-4S  |  Brand / Compatible with: MODDIY
$59.99
Availability:
In Stock
(Usually ships within 24 hours)

Product Description

PCI Express to Serial Port Card (4 x Serial Ports)

Features

  • Fully compliant with PCI Express Base Specification, Revision 1.0a
  • PCIe Multi Function Peripheral controller with x1 Lane Interface
  • Support for D1, D2, D3hot and D3cold
  • Support PCIe Power Management

Specifications

  • 16C450/550/Extended 550 compatible UARTs
  • Supports RS232, RS485 & RS422 modes (need a RS232 to RS485/RS422 Adaptor)
  • Bi-directional speeds from 50 bps to 16Mbps/Port
  • Full Serial Modem Control
  • Supports Hardware, Software flow control
  • 5, 6, 7, 8 and 9-bit Serial format Support
  • Even, Odd, None, Space & Mark parity supported
  • Custom BAUD Rates supported with external clock or by programming internal PLL
  • On Chip 256 Byte depth FIFOs in Transmit, Receive path of each Serial Port
  • Supports remote wakeup and power management features
  • Serial Port transceiver shutdown support
  • Support slow IrDA on all Serial Ports

OS Supported

  • Windows 32bit 2000/XP/2003 Sever/Vista and 64bit XP/2003 Server/Vista 
  • Linux Kernel 2.6.11 & above
  • Mac 10.4 & above

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Product Reviews

  1. Jan Omel N

    I was nice and easy

    21 Oct 2025

  2. Stephen L

    Love your products

    21 Oct 2025

  3. Felix V

    I think this is great! I just wish there was a warehouse in the USA for faster shipping. Now that I know how long items will take to arrive I'll plan future builds accordingly.

    20 Oct 2025

  4. Joshua G

    Good but I wish there was a more direct way to access the custom cable option

    19 Oct 2025

  5. Karl O

    Easy order process and several payment and shipping options. 12V-HPR PCIe5 cables are known to be excellent. Thanks a lot and B. R. Karl

    19 Oct 2025

  6. Jesus B

    Bought a product here before, a bit longer shipping times than I'm used to but a quality product.

    19 Oct 2025

  7. derek j

    worked fine thank ypou

    19 Oct 2025

  8. A Reviewer

    Good

    19 Oct 2025

  9. Clemens van de L

    I've not yet received my order because i just ordered it, but i am keen to receive it hopefully in a week or 2. You're the only webshop that sells custom made cables, exactly what i need for my new PC build.

    19 Oct 2025

  10. Denis M

    Easy

    18 Oct 2025