39
Chapter 3: Motherboard Connections
USB (Universal Serial Bus) Ports
Four USB 3.0 ports (USB4, 5, 6 ,7) and two USB 2.0 ports (USB0, 1) are located on the I/O
back panel. In addition, one USB 3.0 header for two ports (USB8/9) and one USB 2.0 header
for two ports: (USB2/3) are located on the motherboard to provide front chassis access using
USB cables (not included). See the tables below for pin definitions.
Front Panel USB (2.0) Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
+5V
2
+5V
3
USB_PN2
4
USB_PN3
5
USB_PP2
6
USB_PP3
7
Ground
8
Ground
Front Panel USB (3.0/2.0)
Pin Definitions
Pin#
Definition
Pin#
Definition
1
+VBUS
11
In
2
IntA_P1_SSRX-
12
IntA_P2_D-
3
IntA_
13
Ground
4
Ground
14
IntA_P2_SSRX-
5
IntA_P1_SSRX-
15
IntA_
6
IntA_
16
Ground
7
Ground
17
IntA_
8
IntA_P1_D-
18
IntA_
9
In
19
VBUS
10
Ground
Back Panel USB (2.0/3.0)
Pin Definitions
Pin#
Definition
Pin#
Definition
1
+5V
5
+5V
2
USB_PN1
6
USB_PN0
3
USB_PP1
7
USB_PP0
4
Ground
8
Ground
