Gigabyte GA-970A-D3 - Clear CMOS Jumper

- 23 - Hardware Installation
3/4/5) CPU_FAN/SYS_FAN1/SYS_FAN2/PWR_FAN (Fan Headers)
The motherboard has a 4-pin CPU fan header (CPU_FAN), a 3-pin (SYS_FAN2) and a 4-pin (SYS_
FAN1) system fan headers, and a 3-pin power fan header (PWR_FAN). Most fan headers possess a
foolproof insertion design. When connecting a fan cable, be sure to connect it in the correct orientation
(the black connector wire is the ground wire). The speed control function requires the use of a fan with
fan speed control design. For optimum heat dissipation, it is recommended that a system fan be installed
inside the chassis.
1
CPU_FAN
SYS_FAN1
PWR_FAN
DEBUG
PORT
G.QBOFM
SYS_FAN2
1
1
1
CPU_FAN:
SYS_FAN1:
SYS_FAN2/PWR_FAN:
Pin No. Denition
1 GND
2 +12V /Speed Control
3 Sense
4 Speed Control
Pin No. Denition
1 GND
2 +12V /Speed Control
3 Sense
4 Reserve
Pin No. Denition
1 GND
2 +12V
3 Sense
DEBUG
PORT
G.QBOFM
6) CLR_CMOS (Clear CMOS Jumper)
Use this jumper to clear the CMOS values (e.g. date information and BIOS congurations) and reset the
CMOS values to factory defaults. To clear the CMOS values, use a metal object like a screwdriver to
touch the two pins for a few seconds.
Open: Normal
Short: Clear CMOS Values
Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheating. Over- •
heating may result in damage to the CPU or the system may hang.
These fan headers are not conguration jumper blocks. Do not place a jumper cap on the headers. •
Always turn off your computer and unplug the power cord from the power outlet before clearing the CMOS •
values.
After system restart, go to BIOS Setup to load factory defaults (select Load Optimized Defaults) or manually •
congure the BIOS settings (refer to Chapter 2, "BIOS Setup," for BIOS congurations).