The Cooler Master MasterCase Maker 5 case specs say "USB 3.0 x1, USB 3.0 (type C) x1"
I'm guessing that both ports use a single USB 3.0 header cable (since each header supports two ports). That means you'll be using one of the F_USB30_1/F_USB30_2 headers on the motherboard (page 33). I could not find an image of the internal cables of the case.
The only USB 3.1 ports on the motherboard are the Type C and Type A connectors on the back panel (page 20). I could not find a cable that could be used to attach one of those two connectors to a header cable of a case. You wouldn't gain any ports doing that anyway.