It’s probably me, however this is a new 3900.
The external monitors are working.
Charging my mouse with usb cable is working.
However, I have plugged in today:
- Logitech c920 webcam
- Audio-Technica usb microphone
Neither are recognized at all. I’ve plugged into the usb on the back and in the front.
And I’ve plugged them into my laptop directly and they work there.
This is my 2nd 3900 ( I love these units ) and the previous one did recognize these with no issue and automatically installed the software, etc.