StarTech.com
StarTech 1-Port Metal USB to RS422/RS485 Serial Adapter, TAA (ICUSB422IS) | With Isolation, Industrial
As an Amazon Associate, SpecPicks earns from qualifying purchases.
*Price sourced from Amazon.com. Last updated 2026-08-17. Price and availability subject to change.
Bottom line: The StarTech 1-Port Metal USB to RS422/RS485 Serial Adapter, TAA (ICUSB422IS) | With Isolation, Industrial is a niche pick — read recent reviews before buying in the keyboards & mice category, priced around $150.99. Compare close alternatives before committing.
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…
SpecPicks Verdict
SpecPicks scored StarTech 1-Port Metal USB to RS422/RS485 Serial Adapter, TAA… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis 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. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.
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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Provides one RS422/485 port while powering the device through USB
- ✓ Backed by StarTech.com's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Provides one RS422/485 port while powering the device through USB
- RS-485 mode supports Auto Transceiver Turn Around (ATTA)
- Compatible with both USB 2.0 and USB 1.1
- RS422/485 Baud rate up to 921.6 Kbps
- Supports DB9 and terminal block connector
Full Specifications
| Brand | StarTech.com |
|---|---|
| Color | Black |
| Finish | Black |
| Connectivity | USB |
| Model Number | ICUSB422IS |
| Input Voltage | 5 volts_of_direct_current |
| Warranty Type | Limited |
| Connector Type | Serial Adapter |
| Item Dimensions | 4.6 x 2.5 x 0.9 inches |
| Mfr Part Number | ICUSB422IS |
| Number of Items | 1 |
| Number of Ports | 1 |
| Power Plug Type | No Plug |
| Compatible Devices | Desktop |
| Warranty Description | 2 Years |
| Item dimensions L x W x H | 4.6 x 2.5 x 0.9 inches |
| Specific Uses For Product | Industrial automation, Data acquisition, Telecommunications, Process control, Test and measurement |
| Global Trade Identification Number | 00065030830683 |
Ready to buy?
StarTech 1-Port Metal USB to RS422/RS485 Serial Adapter, TAA (ICUSB422IS) | With Isolation, Industrial is sold on the used and vintage market, where eBay carries the live inventory — Amazon does not stock this part. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-08-17. Price and availability subject to change.
Related Keyboards & Mice
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- How to Build a Windows 98 Retro PC in 2026
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best Retro Handhelds in 2026 — From $35 to $500
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best 1440p Gaming GPUs in 2026
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
More reviews from the SpecPicks archive
Browse all reviews →- Best Retro Emulator Consoles 2026: AMD GPU Buying Guide
- Why Stock GPU Pastes Last Longer Than Aftermarket Ones
- Best Quiet PC Cooling Upgrades in 2026
- LongCat-2.0: A Frontier Model Trained Without Nvidia GPUs
- Sega Genesis Games Loaded Off a Vinyl Record — and What It Means for Retro Collectors
- OpenAI and Broadcom Unveil 'Jalapeño' Inference Chip
- Best Raspberry Pi 5 Alternatives in 2025
- BENGOO G9000 vs Turtle Beach Recon 50: Best Sub-$40 Wired Headset
- AA-AgentPerf: What the New Agentic Benchmark Means for Local Coding Rigs
- Build a Magic Mirror 2 Smart Home Hub (2026)
- Best Streaming Gear for New Streamers in 2026: 5 Picks to Start On-Air
- Microsoft's Copilot Goes Agentic — Run Your Own Agent Locally on an RTX 3060
- AMD Ryzen AI Max+ 395: The 128GB Mini PC Running 70B LLMs Locally
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5080
- N100 Mini PC vs Raspberry Pi 4 for Home Assistant in 2026
- Running Qwen3.6 35B A3B at 80 tok/s on a 12GB GPU: What the MSI RTX 3060 12GB Setup Looks Like
- Voodoo3 3000 Period-Correct Build Log: Quake 3 + UT99 LAN Rig for 1999
- Best 2.5" SATA SSD to Upgrade a PS4 Pro in 2026
- Logitech Extreme 3D Pro vs DualSense for Flight and Space Sims in 2026
- Crucial BX500 vs Samsung 870 EVO vs WD Blue: Best Budget SATA SSD for Your Game Library (2026)
- Arc B580 12GB vs RTX 3060 12GB: Which 12GB Card for 1440p in 2026?
- Hailo-8 vs Hailo-8L vs Coral TPU: Which AI Accelerator Wins on Raspberry Pi 5?
- BOSGAME VTA-439: AMD Ryzen AI 9 HX 470 Mini PC for Linux
- HiDream-O1-Image Debuts as Top Open-Weights Text-to-Image Model
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090