USB 3.1 require a different front panel header than USB 3.0.; The USB 3.1 port interface is using the USB 3.0 pin set and more. It is design to be backwards compatible (will explain later).; There are no official release of the specs for the USB 3.1 header yet (as of this writing),; But first motherboard with this is the ASUS ROG MAXIMUS IX FORMULA, STRIX Z270I/Z270G etc.;
Connector1: Type-C Female with
Panel,
Connector2: USB 3.1 Type-E Front Panel Header