Game Input MultipleXer

Hello all. I tried running a search on this but didn't notice any answer to my question before asking. If I missed it, I apologize in advance. My Google-fu has never been the best.

It seems like each device being connected a console (PS4 in my case) needs a USB adapter for Windows, correct? My keyboard has a USB hub built into it. Would I be able to use 1 usb adapter and connect my mouse to the keyboard instead? Or would each still require its own adapter and to be connected directly to the console?

You don't need any hub at all.
GIMX stands for Game Input MultipleXer, which means it can take inputs from multiple devices and combine them into a single output controller via a DIY USB adapter or a bluetooth dongle.

Not sure I follow. How does it physically connect from device to console?

All input devices are connected to the PC.
The DIY USB adapter links the PC to the PS4.

http://gimx.fr/wiki/index.php?title=Main_Page

So it's an in-between adapter between console and PC. That makes more sense. Thank you!