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18) F_ USB1 / F_USB2 / GREEN_USB (Front USB Connector)
Be careful with the polarity of the front USB connector. Check the pin assignments carefully while
you connect the front USB cable, incorrect connection between the cable and connector will make
the device unable to work or even damage it. For optional front USB cable, please contact your
local dealer. The GREEN_USB connector provides no standby power when system is off and
it does not support USB device to wake up from S3 mode. Users who wish to shut down the
standby power
(note)
for their USB devices during system power-off can connect the devices to this
connector via the optional front USB cable.
19) F1_1394 / F2_1394 (IEEE 1394 Connector)
Serial interface standard set by Institute of Electrical and Electronics Engineers, which has features
like high speed, highbandwidth and hot plug. Be careful with the polarity of the IEEE1394 connector.
Check the pin assignment carefully while you connect the IEEE1394 cable, incorrect connection
between the cable and connector will make the device unable to work or even damage it. For
optional IEEE1394 cable, please contact your local dealer.
GA-G1975X-C Motherboard
2
10
1
9
(Note)When the standby power is shut down, USB devices
(example: optical mouses) will not light on during
system power-off.
2
10
F1_1394
1
9
Pin No.
Definition
1
TPA2+
2
TPA2-
3
GND
4
GND
5
TPB2+
6
TPB2-
7
No Pin
8
Power(12V)
9
Power(12V)
10
GND
- 30 -
Pin No.
Definition
1
Power(5V)
2
Power(5V)
3
USB DX-
4
USB Dy-
5
USB DX+
6
USB Dy+
7
GND
8
GND
9
No Pin
10
NC
2
16
F2_1394
1
15
Pin No.
Definition
1
Power(12V)
2
Power(12V)
3
TPA0+
4
TPA0-
5
GND
6
GND
7
TPB0+
8
TPB0-
9
Power(12V)
10
Power(12V)
11
TPA1+
12
TPA1-
13
GND
14
No Pin
15
TPB1+
16
TPB1-
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