Intel® X99 chipset :
5 x USB 3.0/2.0 port(s) (1 at back panel, blue, 4 at mid-board)
Intel® X99 chipset :
8 x USB 2.0/1.1 port(s) (4 at back panel, blue, 4 at mid-board)
ASMedia® USB 3.1 controller :
2 x USB 3.1/3.0/2.0 port(s) ( at back panel, teal blue,