Review on 🔌 StarTech.com Wall Mount USB to Serial RS232 Adapter - 4 Port Hub - COM Port Retention - FTDI USB to DB9 RS232 - Din Rail Compatible (ICUSB2324I), Black by Jeremy Tyson

I recently bought two of these and they are unreliable to say the least. I plug one of the hubs into a PC running Windows Server 2012. The driver installs automatically and the new COM ports show up in Device Manager as expected. I restarted my computer just to be sure, then I started connecting my devices to the hub and that's when the frustrating experience started. The first problem is that there is no clear indication of how a port on a hub is mapped to a COM port in Device Manager. . I've tried connecting to each port and seeing if there is any output from Putty's serial connection console. Neither of them showed anything. I replaced the cable and that didn't fix the problem. I downloaded the latest driver from StarTech.com and manually updated again (and restarted my computer) and it made no difference. To use other COM ports listed in Device Manager and reconnect my device to the ports on the hub one at a time, I found that some COM ports work. However, the connection may drop after a while. Or it didn't resume after I turned my device off and on again. I ended up wasting a lot of time and didn't get anything useful out of it.