StarTech.com 6ft USB to RS422/485 Serial Cable Adapter – COM Retention

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.

Slim Specs Table

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 specified; 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

Check before you buy

• 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.

Frequently Asked Questions

Q: Does this adapter require an external power supply?

A: No, it is USB-powered and does not need an external adapter.

Q: Are COM port settings retained when unplugging?

A: Yes, COM port retention saves settings for quick reconnects.

Q: Is the DB9 connector male or female?

A: The DB9 connector is male and straight.

Q: Which operating systems are supported?

A: Windows, macOS, and Linux are supported as listed in the specifications.

Q: Is this cable TAA compliant?

A: The product title states TAA; verify specific procurement requirements.

The Consultant’s verdict & warranty

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 standard Manufacturer Warranty.