we have Dell Wyse 4030 in use. I manage the Clients via WMS. When I enable RDP USB Redirection then works USB mass storage fine, but my the microphone from the headset (plantronics) is not working. I see no remote audio in the record field. When I enable TCX in the expanded options (sessionconfig=rdp enablerecord=yes usbredirection=tcx) than works the headset, but all usb storage devices are not working.
TCX Suit is legacy enhancement software. It was installed on Server 2008/2012R2/Windows 7. It was enhance USB Redirection, Flash Redirection and Multimedia Redirection. I think you do not have TCX Suit.
I recommend you to try “sessionconfig=rdp usbredirection=rdp”. Also install plantronics headset driver on Server 2012R2. May be Server 2012R2 does not support plantronics headset because it does not have its driver. Windows 10 is PC OS, Server 2012R2 is Server OS.
Enabling TCX would disable the RDP USB redirection.
In your case, you would have to enable USB redirection again, but disable the redirection of audio devices. To do that, go to Global Session Settings and exclude audio devices.
In addition add sessionconfig=rdp enablerecord=yes to your Advanced section.