Antaira MSC-104B (-SI) 4-Port RS-422/485 Universal PCI Card

4-Port RS-422/485 Universal PCI Card
Model: MSC-104B
Availability: Discontinued
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Antaira MSC-104B, 4-Port RS-422/485 Universal PCI Card with Surge and Isolation Protection (Optional)

The MSC-104B, built by Antaira Technologies, is a RS-422/485 PCI board that adds 4 ports of serial communication to workstations, servers and industrial computers.  It may function as a server or client.  It has a DB-37M front panel connector that breaks out to four DB-9 connectors using a break-out cable.  It supports 2-wire and 4-wire RS-422/485 connections.


  • 4 RS-422 or RS-485 serial ports to PCI, 16C950 UART
  • PCI specification 3.0 compliant, 133 MB/s bandwidth
  • ATTA auto RS-485 transmitter buffer control
  • PCI IRQ sharing eliminates IRQ conflicts
  • 4 male DB-9 connectors to DB-37M connector cable included
  • RS-422/485 2-wire and 4-wire modes are available
  • 128 byte FIFO
  • Baud rate up to 921.6 kb/s
  • The MSC-104B includes break-out cable, CD with drivers, utilities and a quick start guide


MSC-104B, no surge and isolation protection
MSC-104B-SI, surge protection of 15 kV and isolation protection 2,500 Vrms

The MSC-102B1 software, with the PCI plug-and-play, is easy to install.  Follow the install wizard found on the CD.  The wizard will recognize the card and automatically install the device driver software.  You’ll be up and running in no time.

Total Ports4
TypeUniversal PCI
Operating System SupportWindows, Linux
Serial Interface
Serial Ports4 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 Type4 x DB9 male connectors via cable
Operating Temperature0 to 55°C
Storage Temperature-40 to 75°C
Humidity5 to 95% non-condensing
CertificationsCE, FCC, RoHS
Warranty5 Years