Add an RS422/485 serial port to your system through USB; features COM port retention
The ICUSB422 6 ft Professional RS422/485 USB Serial Cable Adapter with COM Port Retention lets you connect RS422 or RS485 serial devices to your USB-enabled computer. The adapter features a 9-pin (DB9) male serial connector as well as dipswitch controls for easy port configuration, and requires minimal software. The RS422/RS485 USB Adapter is fully powered via the host USB connection and provides power to the attached serial device without requiring an external power adapter. COM Port Retention saves the assigned port settings, allowing you to disconnect and re-connect the adapter with little to no configuration required on the host computer. Backed by a StarTech.com 2-year warranty and free lifetime technical support.
The StarTech.com Advantage
- USB Powered - no power outlet required, and no cumbersome AC adapter to carry around
- Supports high speed RS-422/RS-485 communication up to 921.6kbps; 400% faster than most USB to RS-232 adapters
- COM retention saves the assigned port settings for the device, so disconnecting/reconnecting is hassle-free

Ports & interfaces
Connector 1	DB9 M
Connector 2	USB-A FM
Connector 1 gender	Male
Connector 2 gender	Female
Connector 1 form factor	Straight
Connector 2 form factor	Straight
Cable length	1.8 m
Weight & dimensions
Weight	100 g
Packaging data
Package width	40 mm
Package depth	230 mm
Package height	160 mm
Package weight	220 g
Other features
Minimum system requirements	Win 98SE/ ME/ 2000/ XP(32/64bit)/ 2003(32/64bit)/ Vista(32/64bit)/ 2008(32/64bit)/ CE(4.2/5.2/6.0) Mac 9.8/OS X Linux 2.4.x +
Dimensions (WxDxH)	41.5 x 1778 x 22.1 mm
Performance
Product colour	Black
Compatible operating systems	Windows CE (4.2, 5.0, 6.0), XP Embedded, 98SE, 2000, XP, Vista, 7, 8, 8.1, 10, 11 Windows Server 2003, 2008 R2, 2012, 2012 R2, 2016, 2019 macOS 10.6 to 10.15, 11.0, 12.0, 13.0 Linux Kernel 3.0.x+
Logistics data
Products per master (outer) case	30 pc(s)
Master (outer) case width	430 mm
Master (outer) case length	500 mm
Master (outer) case height	260 mm