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(Check model USB-4COM Plus)

USB to 4x RS422/485 ports (DB9, male)

Vscom USB-4COMi-M, an USB to 4 x RS422/485 serial port converter DB9 connector
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Serial ports on USB allow further use of existing devices, even when the computer doesn't offer serial ports.
The high speed serial port with the 128 byte FIFO allow high speed communication, even in heavy loaded systems. Unique features reduce the system load. The serial port also allows unusual speed settings like 500.000bps.


  • Metal case
  • DIN-Rail mountable
  • RS422/485 DB9 male port
  • Speed up to 3000 kbps
  • external power supply

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Hardware Specifications
  Serial interface
4 x RS422/485 configured by DIP switch
Speed up to 3000 kbps
Connector 4 x DB9 male
  Available Modes
RS422 full duplex
RS485 4-wire, full duplex
RS485 2-wire, half duplex, with echo
RS485 2-wire, half duplex, without echo
RS422: Tx+/-, Rx+/-, RTS+/-, CTS+/-, GND
RS485 4-wire: Tx+/-, Rx+/-, GND
RS485 2-wire: Data+/-, GND
  USB Interface
USB 2.0
Self powered
External power supply 5V DC required.
Adapter included
12V DC not possible.
Windows 2000 to Windows 10 (x86 and x64)
Windows Server 2000 to 2012 (x86 and x64)
Linux (Kernel 2.6 built-in, 2.4 available)
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Ordering Information
  Part Number
  Product Name
  Packing list
VScom USB-4COMi-M Adapter
USB cable 0,9m
Power Adapter
  Optional Accessories
DK 35A DIN-Rail mounting kit
167×99×29 mm³ (W×L×H)
189×102×30 mm³ with DB9 connectors and ears
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You can purchase VSCOM's products easily from a wide variety of leading technology distributors or partners. Please call us or contact us by mail to find the best ordering method for your needs.
  * Specifications are subject to change without notice.
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