I did the Windows update so have all the drivers installed. Attached is the pin assignment diagram from ECX but there was a loose slip in the manual showing a different pin assignment:
5 pin socket USB3 plug on mainboard
1 red blank yellow black green (v1 d1- g1 d1+)
red blank yellow black green (v2 d2- g2 d2+)
My wires say V1 D1- G1 D1+
V2 D2- G2 D2+