User`s manual

Hardware Installation - 24 -
3/4/5) CPU_FAN/SYS_FAN/SYS_FAN2/PWR_FAN (Fan Headers)
The motherboard has a 4-pin APU fan header (CPU_FAN), a 3-pin (SYS_FAN2) and a 4-pin (SYS_FAN)
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 motherboard supports APU fan speed control, which requires the
use of a APU fan with fan speed control design. For optimum heat dissipation, it is recommended that a
system fan be installed inside the chassis.
CPU_FAN:
SYS_FAN:
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
6) CLR_CMOS (Clearing 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, place a jumper cap on the two pins to
temporarily short the two pins or 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 APU and system from overheating. Over- •
heating may result in damage to the APU 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 clearing the CMOS values and before turning on your computer, be sure to remove the jumper cap
•
from the jumper. Failure to do so may cause damage to the motherboard.
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).
1
CPU_FAN
SYS_FAN
PWR_FAN
DEBUG
PORT
G.QBOFM
SYS_FAN2
1
1
1
DEBUG
PORT
G.QBOFM