If you case does not have a "C" USB port available this can be added to one of the regular slots in the case and plugged into the motherboard to give you a super-fast USB port.
Even if your motherboard does give you a "C" port on its back board this will give you a second one, and if you would like furtherports just add a "C" hub to this port and have as many as you need. No software is required, just install the back port and plug into the correct socket on your motherboard and you'll have a operating "C" USB port.
Note: You must have an open slot in the back of your PC and the motherboard must have the proper socket - see photo.