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USB to 2-Port RS422/485 Converter, Desktop version

  • Model: UTS-M12


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This product has been discontinued and replaced by part number AX102.

Professional grade 2-port USB to RS422 / RS485 converter which is suitable for most applications, including industrial, commercial and any general office computer device.
It is a reliable and cost-effective converter that lets you connect any RS422 or RS485 device directly to your computers USB port.

The COM ports in this converter can be set as either 2 x RS485, 2 x RS422 or 1 x RS485 and 1 x RS422.

This converter is build around the high performance and solid processor chip FT232BL from FTDI Semiconductors which makes it fully compatible with Windows 7 and Windows 8 but it will also work perfectly with older versions of Windows, Linux and Mac.

Overall features
  • RS485 / RS422 selectable by switches for both ports
  • No power supply needed, plug and play
  • Transmission distance up to 5900 feet at 115200bps
  • Automatic send data control
  • Auto detection of data speed
  • Zero delay automatic transmission

Useful optional accessories
(not included)

db9 terminal board
Terminal board

Null modem adapter
Null modem adapter

DB9 to RJ45 adapter
DB9 - RJ45 adapter

DB9 gender changer
Gender Changer

Part number UTS-M12
Operating system Windows 8 32/64, Windows 7 32/64, Vista 32/64, XP 32/64, Server 2003/8R2 32/64, 2000, ME, 98Se, Mac 8/9/X, Linux, Android
Standards USB1.1, 2.0, 3.0, EIA RS-485, RS-422
USB signals VCC, DATA+, DATA-, GND, FG
RS-485 signals D+, D, GND
RS-422 signals R+, R-, T+, T-, GND
Working mode Asynchronous, point to point, point to multi-point, half duplex
Flow control Automatic Send Data Control - no drivers needed
Echo signal Enabled for RS485
Band rate 0 - 3Mbps
Transmission range RS-485 / RS422: 4000 FT
USB: 16 feet
ESD Protection 600W surge protection, 15KV static electricity protection
Serial connector RS-485 / RS422 side DB-9male
USB connector USB side type A interface female
Power consumption Static consumption less than 80mA, dynamic average consumption less than 150mA
Dimensions 3.5 x 2.5 x 1.5 inch

For alternative USB to serial RS485 and RS422 solutions please see our full selection of USB to Serial RS485 converters

Quick Tips!

The advantage of combo RS485 and RS422 converters

Its obvious that the advantage of using a combined USB to RS485 / RS422 converter is that you can connect either a RS485 or a RS422 device to the converter, but did you know that you can also connect both a RS485 and a RS422 device to the converter at the same time? You can, and unless your serial RS485 / RS422 device is very sensitive to data latencies and noise it will in most cases work perfectly fine.

How do I install the drivers for a combo RS485 / RS422 converter?

Installing the drivers for a combination RS485 / RS422 converter is done exactly the same way as with a standard single port RS422 converter, except that with the combo RS422 converter you need to go through the installation process two times, however its all done automatically after you start the driver installer. Installation instructions and drivers for all our USB to RS485 / RS422 converter are freely downloadable from our website.


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