First time I hear of these OpenSticks. Two things leap to mind:

Can these, when plugged in use TCP over USB - turning any router with USB into a 4g router, or a WiFi access point? (If Linux can run the WiFi chip in AP mode...)?

Can these, when plugged into a server, workstation, laptop act as a console/emulate mouse/keyboard? Act as serial console over 4g/wifi?

I suppose they can't read video, so cannot truly do two way VGA/hdmi kvm..?