Gigabyte GA-8IG User Manual page 23

B) ATX (ATX Power)
3.3V
GND
PS-ON(Soft On/Off)
GND
GND
VCC
AC power cord should only be connected to your power supply unit after ATX power cable and other
related devices are firmly connected to the mainboard.
H / I) F_USB1/F_USB2 (Front USB Connector)
(F_USB1 & F_USB2 connectors in yellow are for USB 2.0)
USB Dy+
USB Dy-
GND
Power
1
Power
USB Dx-
GND
USB Dx+
K) COMB (COM B Connector)(White)
NDSRB-
NDTRB-
NCTSB-
NSINB
1
NDCDB-
NRTSB-
NSOUTB
GND
1
3.3V
-12V
VCC
GND
VCC
-5V
Power Good
VCC +12V
20
USB Over Current
Be careful with the polarity of the front
panel USB connector. Check the pin
assignment while you connect the front panel
USB cable. Please contact your nearest dealer
for optional front panel USB cable.
N C
NRIB-
1 9
Hardware Installation Process
3.3V
GND
GND
GND
5V SB (Stand by +5V)