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L4IBMG2 / L4IBMGL2 V1.0b
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
1
VREG_FP_USBPWR0
2
VREG_FP_USBPWR0
3
USB_FP_P4-
4
USB_FP_P5-
5
USB_FP_P4+
6
USB_FP_P5+
7
GND
8
GND
9
KEY
10
NC
USB3
Pin
Signal Name
1
VREG_FP_USBPWR0
2
VREG_FP_USBPWR0
3
USB_FP_P2-
4
USB_FP_P3-
5
USB_FP_P2+
6
USB_FP_P3+
7
GND
8
GND
9
KEY
10
NC
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
Function
Front Panel USB Power
Front Panel USB Power
USB Port 4 Negative Signal
USB Port 5 Negative Signal
USB Port 4 Positive Signal
USB Port 5 Positive Signal
Ground
Ground
No pin
Not connected
Function
Front Panel USB Power
Front Panel USB Power
USB Port 2 Negative Signal
USB Port 3 Negative Signal
USB Port 2 Positive Signal
USB Port 3 Positive Signal
Ground
Ground
No pin
Not connected
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