Well at the end of the day it’s just all wire, a knife and a soldering iron you can change them out however you like. But I’m assuming that’s not what you meant.
There are adapters, startech makes a bunch of different kinds. So you could use a USB adapter over the USB extension cable.
Historically people would use stereo wire for stuff like that.
koboldcpp works fairly well. There’s lots of different models to try and the choice depends a fair bit on your computer specs and what you wanna do with it. github.com/LostRuins/koboldcpp