The only thing that "Type C" represents is a physical USB port that is reversible, as in, there is no upside down. They can be plugged in using either of 180 degree positions, same both ways instead of only having one correct position like all previous USB form factor specifications and physical designs.
Type C has so far been used for implementation of various Thunderbolt, USB 3.0/3.1 gen 1 and USB 3.1 gen2 specifications.
Doesn't matter if it's Mac or PC, the spec itself is whatever the spec is. Type C can either be used typically for Gen1 USB 3.0/3.1 OR Gen2 USB 3.1, which is much faster but requires hardware and cabling support that are Gen2 approved.
There are just now starting to be a few boards that have them not only on the...