The ICUSB422IS 1 Port Metal Industrial USB to RS422/RS485 Serial Adapter w/ Isolation connects to a computer using USB and allows you to connect any RS-422 or RS-485 serial device via the provided DB9 port or hard-wired to the terminal block.

The USB to serial adapter features circuit isolation to ensure that sensitive controls and devices will not be damaged while connected, making it a viable solution for connecting costly industrial serial devices.

The RS422/485 Converter receives full power via the host USB connection, and provides power to the attached serial device without requiring an external power adapter. Designed to provide a durable serial solution, the USB to RS422/485 Converter is ruggedly constructed and can be mounted nearly anywhere.

Backed by a 2-year warranty and free lifetime technical support.


  • POS (credit/debit card readers, receipt printers, bar code scanners, cash registers, scales)
  • Manufacturing (CNC machinery, process control equipment, bar code scanners, serial printers)
  • Hotel Front Desk (serial printers, bar code scanners, keyboard, mouse, receipt printer, credit/debit card reader)
+ More- Less

The Advantage

  • Supports RS-485 and RS-422 serial interfaces via DB9 or Terminal Block connections for versatile connection options
  • Circuit isolation provides electrical protection for sensitive, and often expensive industrial equipment
  • Rugged, USB Bus powered enclosure requiring no external power adapter for simple integration into harsh industrial environments


Warranty Information
Warranty 2 Years
Bus Type USB 2.0
Chipset ID FTDI - FT232RL
Interface Serial
Port Style External Hub
Ports 1
Data Bits 7, 8
FIFO 256 Byte Receive/128 Byte Transmit
Isolation 2500 Vrms
Max Baud Rate 921.6 Kbps
Parity Even, Odd, Mark, Space, None
Serial Protocol RS-422/485
Stop Bits 1, 2
Surge Protection 500W
Connector Type(s) 1 - USB B (4 pin) Female
External Ports 1 - DB-9 (9 pin, D-Sub) Male
1 - Terminal Block (5 Wire)
OS Compatibility Windows® CE (4.2, 5.0, 6.0), XP Embedded, 98SE, 2000, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016, 2019
Mac OS® 10.6 to 10.14
Linux 2.4.x to 4.11.x LTS Versions only
Input Current 200mA
Input Voltage 5 DC
Power Source USB-Powered
Humidity 5~95% RH
Operating Temperature 0°C to 55°C (32°F to 131°F)
Storage Temperature -20°C to 85°C (-4°F to 185°F)
Physical Characteristics
Cable Length 6 ft [1.8 m]
Color Black
Enclosure Type Steel
Product Height 0.9 in [2.3 cm]
Product Length 4.6 in [11.8 cm]
Product Width 2.5 in [64 mm]
Weight of Product 6.4 oz [180 g]
Packaging Information
Package Height 6.3 in [16 cm]
Package Length 9.1 in [23 cm]
Package Width 1.8 in [45 mm]
Shipping (Package) Weight 0.9 lb [0.4 kg]
What's in the Box
Included in Package 1 - USB to RS422/485 Converter
1 - 6ft USB A to B Cable
1 - Driver CD
1 - User Manual
Barcode # 65030830683
Brand Startech
Shipping Weight 0.5000kg
Manufacturer Warranty: 2 Years Limited Warranty

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