StarTech.com 8.3ft (2.5m) 1-Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation, USB to RS232 Adapter - TAA

Product Overview

AI-generated summary

At ~£98 ex-VAT, this StarTech USB–to–RS232 cable isn’t really a “cheap adapter you keep in a drawer” item—it’s the kind of purchase you make when you need reliable serial connectivity and you don’t want to gamble on drivers, grounding issues, or flaky adapters. The optical isolation is the big selling point in day-to-day IT work: it’s there for noisy industrial environments, legacy gear with questionable grounding, and situations where serial ports keep throwing up weird errors. If you’ve ever had a field device behave until someone unplugs/replugs or swaps cables, this is aimed at reducing that kind of pain.

Who should buy it: teams that support industrial/SCADA/automation gear, networking gear consoles, UPS/serial monitoring, lab equipment—basically any “RS232 but temperamental” scenario where uptime matters more than £ spent. Who shouldn’t: if you’re just occasionally converting a laptop for quick commissioning, there are far cheaper non-isolated options that may be perfectly fine. Also, if your serial devices are sensitive to timing/handshaking and you’re troubleshooting driver-level behaviour, a “known good” isolated adapter helps, but you still need to make sure the rest of your setup (settings on the equipment, cabling, COM port mapping) is aligned. Overall: good value if you’re using it more than once and isolation will save you hours of fault-finding; hard to justify if it’s just a casual convenience purchase.