L4IBMG2 / L4IBMGL2 V1.0b
24
USB2/USB3: Front panel USB ports
The mainboard has two USB ports installed on the rear edge I/O port array.
Additionally, some computer cases have USB ports at the front of the case. If
you have this kind of case, use auxiliary USB connectors USB2 and USB3 to
connect the front-mounted ports to the mainboard.
USB2
Pin
Signal Name
Function
1
VREG_FP_USBPWR0
Front Panel USB Power
2
VREG_FP_USBPWR0
Front Panel USB Power
3
USB_FP_P4-
USB Port 4 Negative Signal
4
USB_FP_P5-
USB Port 5 Negative Signal
5
US
USB Port 4 Positive Signal
6
US
USB Port 5 Positive Signal
7
GND
Ground
8
GND
Ground
9
KEY
No pin
10
NC
Not connected
USB3
Pin
Signal Name
Function
1
VREG_FP_USBPWR0
Front Panel USB Power
2
VREG_FP_USBPWR0
Front Panel USB Power
3
USB_FP_P2-
USB Port 2 Negative Signal
4
USB_FP_P3-
USB Port 3 Negative Signal
5
US
USB Port 2 Positive Signal
6
US
USB Port 3 Positive Signal
7
GND
Ground
8
GND
Ground
9
KEY
No pin
10
NC
Not connected
Note:
Please make sure that the USB cable has the same pin assignment as indi-
cated above. A different pin assignment may cause damage or system
hang-up