Gigabyte GA-X79-UD3 - Page 24

Hardware Installation - 24 -
3/4) CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3/SYS_FAN4 (Fan Headers)
The motherboard has a 4-pin CPU fan header (CPU_FAN), two 4-pin (SYS_FAN1/SYS_FAN2) and two
3-pin (SYS_FAN3/SYS_FAN4) system fan headers. Most fan headers possess a foolproof insertion de-
sign. 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 fan speed control, which requires the use of a cooler
with fan speed control design. For optimum heat dissipation, it is recommended that a system fan be in-
stalled inside the chassis.
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.
•
CPU_FAN:
Pin No. Denition
1 GND
2 +12V/Speed Control
3 Sense
4 Speed Control
CPU_FAN
SYS_FAN2
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
1
1
SYS_FAN3/SYS_FAN4
SYS_FAN1:
SYS_FAN3/SYS_FAN4:
Pin No. Denition
1 GND
2 +12V /Speed Control
3 Sense
4 Reserve
Pin No. Denition
1 GND
2 +12V
3 Sense
1
SYS_FAN2:
Pin No. Denition
1 GND
2 +12V
3 Sense
4 Speed Control
SYS_FAN1
DEBUG
PORT
G.QBOFM
1