Quatech 4 Port RS-422/485 Serial PCI Board (cable additional)

Sewell Part # SW-4744

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"Very prompt delivery and excellent product."


This card does include the required breakout cable. Replacement cables are availble in 25 pin or 9 pin configurations.

This RS-422/485 PCI board from Quatech is the best solution for attaching up to 4 serial devices through a single-interrupt PCI card. Designed to play well with your PCI bus, this card will reduce PCI register conflicts. The additional cable will allow you to connect up to 4 RS-422/485 devices.

Quatech has gone the extra mile and included a clock multiplying feature on this card. This means you can get data rates up to 921.6 kbps. For maximum signal quality and reliability, a 4 layer board design is used. This card is the workhorse of the PCI Serial card scene.


Mfg. Part Number

  • QSC-200/300


  • Quatech


  • 4 independent RS-232 ports
  • Speeds up to 921.6 kbps
  • 16750 UARTs with 64-byte FIFOs (16550 for DSC-100, with 16-byte FIFOs)
  • Full modem control and hardware and software flow control
  • Connector Cable not included
  • Surge suppression package available
  • Windows 95/98/Me/NT/2000/XP & Linux support
  • 5 year warranty


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Quatech 4 Port RS-422/485 Serial PCI Board (cable additional)