ECS A770M-A, Manual

Page: 28 / 54

22
Installing the Motherboard
F_USB1~2: Front Panel USB headers
The motherboard has six USB ports installed on the rear edge I/O port array. Addi-
tionally, some computer cases have USB ports at the front of the case. If you have
this kind of case, use auxiliary USB connector to connect the front-mounted ports to
the motherboard.
Please make sure that the USB cable has the same pin assignment as
indicated above. A different pin assignment may cause damage or
system hang-up.
1
USBPWR Front Panel USB Power
2
USBPWR Front Panel USB Power
3
USB_FP_P0- USB Port 0 Negative Signal
4
USB_FP_P1- USB Port 1 Negative Signal
5
US USB Port 0 Positive Signal
6
US USB Port 1 Positive Signal
7
GND Ground
8
GND Ground
9
Key No pin
10
NC Not connected
Function
Pin Signal Name
CD_IN: Analog audio input connector
Pin Signal Name Function
1
CD_L Left CD-in signal
2
GND Ground
3
GND Ground
4
CD_R Right CD-in signal
SPDIFO1: SPDIF out header
This is an optional header that provides an S/PDIF (Sony/Philips Digital Interface)
output to digital multimedia device through optical fiber or coaxial connector.
2
+5VA 5V analog Power
3
Key No pin
4
GND Ground
1
SPDIF SPDIF digital output
Pin Signal Name Function