Antaira MSC-202B1 (-SI) 2-Port RS-422/485 PCI Express Card with Isolation

2-port RS-422/485 PCI Express Card, Oxford Single Chip Solution
Model: MSC-202B1
Availability: IN STOCK

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Antaira MSC-202B1 PCI Express Card with 2 Ports of RS-422/485, Optional Surge and Isolation Protection

The MSC-202B1, manufactured by Antaira Technologies, is a RS-422/485 PCI Express card that adds 2 ports of serial communication to desktops, servers and industrial computers.  It may function as a client or server to connect serial based equipment like instruments, meters and sensors. It has two DB-9 front panel connectors, and it supports 2-wire and 4-wire RS-422/485 connections.


  • 2 RS-422 or RS-485 serial ports
  • Compliant with PCI Express Specification 1.1
  • x1 PCI Express throughput of 250 MB/s
  • ATTA auto RS-485 transmitter buffer control
  • Deep 128 byte FIFO per transmitter and receiver
  • 2 male DB-9 connectors on face plate
  • RS-422/485 2-wire and 4-wire modes are available
  • Baud rate up to 921.6 kb/s
  • Optional surge and isolation protection
  • The MSC-202B1 includes a CD-ROM with drivers, utilities and a quick start guide
  • 5 year warranty


MSC-202B1,     no surge and isolation protection
MSC-202B1-SI, surge protection of 15 kV and isolation protection 2,500 Vrms

The MSC-202B1 software supports Windows and Linux.  With the PCI plug-and-play wizard found on the CD, it’s easy to install.  The wizard will recognize the board and install the device driver software automatically.  You’ll be up and running in no time.

Total Ports2
TypePCI Express
Operating System SupportWindows, Linux
Serial Interface
Serial Ports2 x RS-422/485
Baud RateUp to 921.6 Kbps
Data Bits5, 6, 7, 8, 9
ParityNone, Odd, Even, Mark
Flow ControlXon / Xoff
SignalsCTS, RTS / DSR, DTR
Host Controller16C550/16C950 UART Compatible
Serial PowerSelect 5 VDC or 12 VDC over DB9 pins
FIFO128 Byte
Surge Protection15KV ESD Protection
Isolation Protection2,500 Vrms
Connector Type2 x DB9 male connectors
Operating Temperature0 to 55°C
Storage Temperature-40 to 75°C
Humidity5 to 95% non-condensing
CertificationsCE, FCC, RoHS
Warranty5 Years
Download NameFile Size
MSC-202B1 Datasheet3.19MB
MSC-202B1 Quick Start Guide515.33KB