Elitegroup Computer Systems 748-A Manual page 27

USB3: Front panel USB connectors
The mainboard has four 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 connector USB3 to connect the
front-mounted ports to the mainboard.
Pin Signal Name
1 VREG_FP_USBPWR0
2 VREG_FP_USBPWR0
3 USB_FP_P0-
4 USB_FP_P1-
5 USB_FP_P0+
6 USB_FP_P1+
7 GND
8 GND
9 KEY
10 Not assigned
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.
IR1: Infrared port
(optional)
Infrared ports allow the wireless exchange of information between your com-
puter and similarly equipped devices such as printers, laptops, Personal
Digital Assistants (PDAs), and other computers.
Pin Signal Name
1 Not assigned
2 KEY
3 +5V
4 GND
5 IRTX
6 IRRX
RF1: RF Wireless Mouse header
If you have a wireless mouse, connect the RF mouse cable to this header.
Pin Signal Name
1 VCC
2 PMDAT
3 PMCLK
4 KEY
5 GND
Function
Front Panel USB Power
Front Panel USB Power
USB Port 0 Negative Signal
USB Port 1 Negative Signal
USB Port 0 Positive Signal
USB Port 1 Positive Signal
Ground
Ground
No pin
Not assigned
Function
Not assigned
No pin
IR Power
Ground
IrDA serial output
IrDA serial input
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