Antaira MSC-202B1L (-SI) 2-Port RS-422/485 PCI Express Card with Isolation

2-Port RS-422/485 PCI Express Card
Model: MSC-202B1L
Availability: IN STOCK

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Antaira MSC-202B1L 2-Port RS-422/485 PCI Express Card with Choice of Isolation Protection

Antaira Technologies' MSC-202B1L is an RS-422/485 PCI Express (PCIe) card designed to added serial ports to a PC, workstation or server.  The MSC-202B1L is compatible with 2- and 4-wire RS422/485 devices and transmits data up to 921.6 Kbps.  The plug-and-play feature means simple and quick installation.  Device drivers and Wizard software are included on CD-ROM.  Optional surge and isolation protection for the serial ports is available.


  • x1 PCI Express interface at 250Mbytes/sec
  • 2 RS-422/485 serial ports
  • Choice of 15 kV surge and 2,500 Vrms isolation protection
  • Fully Compliant with PCI Express Base Specifications, Revision 1.1
  • RS-485 auto transceiver turn around by unique featured ATTA hardware
  • 128-byte deep FIFO per transmitter and receivers
  • Includes low and standard profile mounting brackets
  • Supports 4-wire RS-422/485 and 2-wire RS-485
  • Transmission speed to 921.6 Kbps
  • Drivers and utilities on CD-ROM
  • One cable with two DB9 male connectors to DB25 is included


MSC-202B1L,     no surge and isolation protection
MSC-202B1L-SI, surge protection of 15 kV and isolation protection 2,500 Vrms

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 via cable
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-202B1L Datasheet1.07MB
MSC-202B1L Quick Install Guide515.33KB