Identifying Connector Pinouts 175
USB Connector PinoutsTwo Universal Serial Bus (USB) ports are located on the motherboard in a
double-stacked layout and can be accessed from the back panel. Two additional USB
ports are located on the front panel.
Pin Signal Description Pin Signal Description
A1 +5 V (fused) B1 +5 V (fused)
A2 USB0/1- B2 USB2/3-
A3 USB0/1+ B3 USB2/3+
A4 Ground B4 Ground