ECS A770M-A Manual page 28

22
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.
Pin Signal Name
1
USBPWR
2
USBPWR
3
USB_FP_P0-
4
USB_FP_P1-
5
USB_FP_P0+
6
USB_FP_P1+
7
GND
8
GND
9
Key
10
NC
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.
CD_IN: Analog audio input connector
Pin Signal Name
1
CD_L
2
GND
3
GND
4
CD_R
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.
Pin Signal Name
1
SPDIF
2
+5VA
3
Key
4
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 connected
Function
Left CD-in signal
Ground
Ground
Right CD-in signal
Function
SPDIF digital output
5V analog Power
No pin
Ground
Installing the Motherboard