StarTech.com1 Port Metal Industrial USB to RS422/RS485 Serial Adapter w/ Isolation (ICUSB422IS), Black

As with all Startech products, this unit is excellent quality. It just works, simple as that.

Perfectly suited for RS422 communication. Reliable, fast and simple to set up. Use this device in multiple locations and have no issues with it.

Worked well for my RS485 Modbus interface

No use. Driver doesn't install on Windows 7 at all. On XP it installs, but not like the instructions say. The CD has multiple drivers on it, and you have to search through half a dozen other folders before guessing which is the right one. I bought because being more expensive than the five quid adaptors, I expected it perhaps just work with Sony cameras. But I don't get anything out of them with this connected, zilch. I can't rule out that it's me, but since it won't even install on Windows 7, I can't try my second PC, and it's academic since it has to be able to run on here.

Does exactly what you'd expect it to do. Nothing special; well built, affordable, and adequate length for what I needed it for.

The devices drivers are recognized by Windows 10/11 operation system. For better convenience I bought two cables and DB9 female to female adapter. That allow me to test connections by running Modbus Slave on one serial port and Master on other one.

Excelente producto, muy buena calidad

We use hundreds of these in our products. Best we have found.

普通に使えます。送受信のLEDランプ付き(T/R共に緑ランプ)。ドライバーと、ピンアサインなどが書かれた説明書付き。値段相応と思います。あとは耐久性かな。

Unit works as advertized. Startech was very helpful.