10 K1 and K2 Motherboard, User Manual
2x 6 pin header, 2.54 mm pitch
USB 2.0 (internal)
8 USB ports at K1 board and 4 USB ports at K2 are routed to 10pin double
row headers with 2.54 mm pitch. Each header provides 2 ports. These
headers are intended to connect optional front USB modules or USB hubs.
Two USB ports share one fuse. USB port 11 at header USB3 (pins 1,3,5,7)
is shared with PCIe x1 connector PCIE3 (pins A5 to A8) for USB uplink
connection for the "Retail Card".