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Chapter 4: Motherboard Connections
Universal Serial Bus (USB) Header
There are three USB 2.0 headers (USB1/2, USB3/4, USB5/6), one USB 3.1 Gen 1 header
(USB7/8), one USB 3.1 Gen 2 header (USB13/14), and one USB 2.0 Type A header (USB0)
on the motherboard to provide front access connection with a cable (not included). There
are also four USB 3.1 Gen 2 ports on the I/O back panel. USB9, USB10, and USB12 are
Type-A while USB11 is Type-C.
Front Panel USB 2.0 Header
(USB1/2/3/4/5/6)
PinDenitions
Pin# Denition Pin# Denition
1 +5V 2 +5V
3 USB_PN2 4 USB_PN3
5 USB_PP2 6 USB_PP3
7 Ground 8 Ground
9 Key 10 Ground
Front Panel USB 3.1 Gen 1 Header
(USB7/8)
PinDenitions
Pin# Denition Pin# Denition
1 VBUS 11 IntA_P2_D+
2 IntA_P1_SSRX- 12 IntA_P2_D-
3 IntA_P1_SSRX+ 13 GND
4 GND 14 IntA_P2_SSTX+
5 IntA_P1_SSTX- 15 IntA_P2_SSTX-
6 IntA_P1_SSTX+ 16 GND
7 GND 17 IntA_P2_SSRX+
8 IntA_P1_D- 18 IntA_P2_SSRX-
9 IntA_P1_D+ 19 VBus
10
ID
Front Panel USB 3.1 Gen 2 Header
(USB13/14)
PinDenitions
Pin# Denition Pin# Denition
1 GND 11 GND
2 TX1+ 12 TX2-
3 TX1- 13 TX2+
4 GND 14 GND
5 RX1+ 15 RX2-
6 RX1- 16 RX2+
7 GND 17 GND
8 D1+ 18 D2+
9 D1- 19 D2-
10 VBUS 20 VBUS
* USB 3.1 Gen 1 is also referred to as USB 3.0
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