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Chapter 4: Motherboard Connections
Universal Serial Bus (USB) Ports
Two USB 2.0 ports (USB0/1) and two USB 3.0 ports (USB6/7) are located on the I/O back
panel. The motherboard also has two front access USB 2.0 headers (USB2/3 and USB4/5)
and one front access USB 3.0 header (USB9/10). The USB8 header is USB 3.0 Type A. The
onboard headers can be used to provide front side USB access with a cable (not included).
Back Panel USB (2.0) 0/1
Pin Definitions
Pin#
Definition
Pin#
Definition
1
+5V
5
+5V
2
USB_N
6
USB_N
3
USB_P
7
USB_P
4
Ground
8
Ground
Front Panel USB (2.0) 2/3, 4/5
Pin Definitions
Pin#
Definition
Pin#
Definition
1
+5V
2
+5V
3
USB_N
4
USB_N
5
USB_P
6
USB_P
7
Ground
8
Ground
9
Key
10
NC
Back Panel USB 6/7 (3.0)
Pin Definitions
Pin#
Definition
Pin#
Definition
1
VBUS
19
Power
2
Stda_SSRX-
18
USB3_RN
3
St
17
USB3_RP
4
GND
16
GND
5
Stda_SSTX-
15
USB3_TN
6
St
14
USB3_TP
7
GND
13
GND
8
D-
12
USB_N
9
D+
11
USB_P
10
x
Front Panel USB 9/10 (3.0)
Pin Definitions
Pin#
Definition
Pin#
Definition
A1
VBUS
B1
Power
A2
D-
B2
USB_N
A3
D+
B3
USB_P
A4
GND
B4
GND
A5
Stda_SSRX-
B5
USB3_RN
A6
St
B6
USB3_RP
A7
GND
B7
GND
A8
Stda_SSTX-
B8
USB3_TN
A9
St
B9
USB3_TP
Type A USB 8 (3.0)
Pin Definitions
Pin#
Definition
Pin#
Definition
1
VBUS
5
SSRX-
2
USB_N
6
SSRX+
3
USB_P
7
GND
4
Ground
8
SSTX-
9
SSTX+
VGA Port
A video (VGA) port is located next to LAN3/4 on the I/O back panel.