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StarTech 6ft 1-Port Professional RS422/485 USB Adapter Cable (ICUSB422) | With COM Retention, Serial, FTDI chipset
StarTech.com

StarTech.com StarTech 6ft 1-Port Professional RS422/485 USB Adapter Cable (ICUSB422)

Bottom line: The StarTech 6ft 1-Port Professional RS422/485 USB Adapter Cable is a specs-and-price decision rather than a crowd-consensus one in the keyboards & mice category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Backed by StarTech.com's warranty and support channels

Cons

  • ✗ Check the listed dimensions, connectors and platform compatibility against your setup before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

Manufacturer description

The ICUSB422 6ft 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 serial adapter is USB-powered, eliminating the aggravation of requiring an external power adapter. With COM port retention, assigned port settings are saved, so you can disconnect and reconnect the adapter with virtually no configuration required on the host computer.The ICUSB422…

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SpecPicks Verdict

SpecPicks scored StarTech 6ft 1-Port Professional RS422/485 USB Adapter Cable using a rating × review-volume × price-fit model applied to published specs and reviews across the keyboards & mice category. StarTech.com's keyboards & mice lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for keyboards & mice of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • MULTI-USE FUNCTIONALITY: This versatile USB to serial RS232 adapter is perfect for a range of applications, from digital signage to connecting point-of-sale systems and barcode scanners
  • CUSTOMIZABLE SOLUTION: This USB serial hub features an FTDI chipset, making it highly customizable and compatible, and the ideal solution for any setup
  • COMPACT DESIGN: Designed with a small form factor, this serial RS422/485 converter is USB powered and requires no bulky power adapters or an outlet
  • EASY INSTALLATION: This serial adapter ensures easy installation and operation with COM port retention that provides robust serial connectivity for legacy devices
  • TECH SPECS: 6 feet (1.8 meters); FTDI FT232RL Chipset; Max Baud Rate: 921.6 Kbps; 256 Bytes FIFO; None/Odd/Even Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits; TAA Compliant

Full Specifications

BrandStarTech.com
ColorBlack
FinishMatte
Unit Count1 Count
ConnectivityUSB
Model NumberICUSB422
Warranty TypeFull (2 Years)
COMPACT DESIGNDesigned with a small form factor, this serial RS422/485 converter is USB powered and requires no bulky power adapters or an outlet
Connector TypeUSB Type A
Item Dimensions72.05 x 1.63 x 0.87 inches
Mfr Part NumberICUSB422
Number of Items1
Number of Ports1
Power Plug TypeType A - 2 pin (North American)
EASY INSTALLATIONThis serial adapter ensures easy installation and operation with COM port retention that provides robust serial connectivity for legacy devices
Compatible DevicesPC
Warranty Description2 year warranty
CUSTOMIZABLE SOLUTIONThis USB serial hub features an FTDI chipset, making it highly customizable and compatible, and the ideal solution for any setup
Item dimensions L x W x H72.05 x 1.63 x 0.87 inches
Specific Uses For Productpersonal
Full listing titleStarTech 6ft 1-Port Professional RS422/485 USB Adapter Cable (ICUSB422) | With COM Retention, Serial, FTDI chipset

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StarTech 6ft 1-Port Professional RS422/485 USB Adapter Cable (ICUSB422) | With COM Retention, Serial, FTDI chipset is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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StarTech 6ft 1-Port Professional RS422/485 USB Adapter Cable (ICUSB422) | With COM Retention, Serial, FTDI chipset
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