As a slightly more interesting approach, but still using an RPi, I’ve been working on the attached script that monkey patches pySerial allowing you to use all the standard pros commands from a host computer that then transmits serial requests over WiFi to a server running on the Pi. Because it pretends to be a serial device, things like uploading directly from a computer not the Pi work too (as well as serial terminal, etc.) 
(I’m going to properly have it up on git once it’s tested and has niceties added)
In short, Your PC->PROS(SerialBridge) ~~~~~ WiFi ~~~~~ SerialBridge->USB
SerialBridge.zip (3.25 KB)