StarTech.com 6ft USB to RS422/485 Serial Cable Adapter – COM Retention
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About This Item
- USB-A female to DB9 male connectors
- 1.8 m straight cable length
- COM port retention for saved settings
- USB-powered operation no external adapter needed
- Compatible with Windows, macOS and Linux
- Black straight form factor 41.5 x 1778 x 22.1 mm
- Check device OS support meets kernel 3.0.x+ or equivalent
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StarTech.com ICUSB422 | Professional USB to RS422/485 Serial Adapter
The StarTech.com 6ft (1.8m) 1-Port Professional RS422/485 USB Serial Cable Adapter with COM Retention, USB to RS422 Adapter – TAA adds a reliable serial port to modern systems. It is designed for engineers and technicians connecting industrial or legacy devices. The key USP is COM port retention, which saves settings between sessions. Because it is USB-powered, you avoid external power supplies. Also, it supports wide OS compatibility for flexible deployment.
Product Specifications
| Metric | Spec. |
|---|---|
| Cable length | 1.8 m |
| Connector 1 | DB9 Male (Straight) |
| Connector 2 | USB-A Female (Straight) |
| Product colour | Black |
| Weight | 100 g |
| Warranty | 2-year (manufacturer) |
Reliable COM Port Retention for Faster Setups
This adapter keeps assigned COM port settings saved. So, you can disconnect and reconnect without reconfiguring the host PC. In practice, that reduces downtime during field service or lab work. For example, maintenance teams can swap devices quickly while preserving profiles.
USB-Powered Convenience with Dip-Switch Control
The cable draws power directly from USB. However, you must confirm your host port can deliver adequate power, especially on older laptops. Dip-switch controls allow straightforward RS422/485 configuration. Because the software requirement is minimal, deployment is simple across mixed environments.
Wide OS Compatibility for Mixed Estates
Compatible operating systems include Windows CE through 11 and Server editions. macOS 10.6 to 13.0 is supported, plus Linux Kernel 3.0.x+. Therefore, legacy and current platforms can use the same adapter family. Also, confirm your specific OS build and driver availability before purchase.
Robust Build and Practical Dimensions
The cable measures 1.8 m with straight connectors. Dimensions are 41.5 x 1778 x 22.1 mm (WxDxH). The black finish suits industrial cabinets and desktop setups. However, compliance markings such as UKCA are not listed here; verify local requirements if needed.
Box contents
- 1 × StarTech.com USB to RS422/485 Serial Cable Adapter (ICUSB422)
- 1 × 1.8 m integrated cable with DB9 Male and USB-A Female connectors
Key points to check
- Confirm your device uses RS422 or RS485 and a 9-pin D-sub interface.
- Verify your operating system matches the listed compatibility ranges.
- Ensure USB-A host port availability and adequate power delivery.
- Check physical clearance for the 41.5 mm adapter body in your enclosure.
Common questions
Does this adapter require an external power supply?
Are COM port settings retained when unplugging?
Is the DB9 connector male or female?
Which operating systems are supported?
Is this cable TAA compliant?
Final thoughts
Choose this adapter if you need a single-port USB to RS422/485 solution with COM retention for industrial or lab use. It suits engineers maintaining legacy equipment across mixed OS environments. Covered by the applicable manufacturer warranty.
| 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 + |
|---|---|
| Connector 2 | USB-A FM |
| Connector 1 | DB9 M |
| Cable length | 1.8 m |
| Connector 2 gender | Female |
| Connector 1 gender | Male |
| Connector 2 form factor | Straight |
| Connector 1 form factor | Straight |
| Dimensions WxDxH | 41.5 x 1778 x 22.1 mm |
| 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+ |
| Weight | 100 g |
| Package width | 40 mm |
| Package height | 160 mm |
| Package depth | 230 mm |
| Package weight | 220 g |
| 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 |
| Distributor SKUs | V215594, V930919, 4428848, 10011781, 211865, CLICUSB422 |
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