Quote History Correct. They use a wireless USB.
Radio side:
Radio->programming cable->wireless USB adapter.
Pc side:
Pc->USB device. (Shows com ports on your Pc, but actually connects to the remote usb device)
I have a wireless serial adapter, but I dont have a 'usb' type. I would need a usb to serial adapter on the radio side to try it. I was satisfied just using the cable, but I may order one and try it out. I've never actually seen this demonstrated, just people describing they did it on reddit.
ETA:
They are using a tiny pc to connect the radio to. Then remote desktop from their pc to the tiny pc. Wireless connections direct to the radio are problematic because it expects real time control and wireless has too much latency.
On the bright side a tiny pc is about $100, so you could go that route I guess. Seems like a pain though.