Gigabyte GA-M750SLI-DS4 User Manual page 25

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_FAN1) and a 4-pin
(SYS_FAN2) system fan header, and a 3-pin power fan header (PWR_FAN). Each fan header
supplies a +12V power voltage and possesses a foolproof insertion design. When connecting a fan
cable, be sure to connect it in the correct orientation. Most fans are designed with color-coded
power connector wires. A red power connector wire indicates a positive connection and requires
a +12V voltage. The black connector wire is the ground wire. The motherboard supports CPU fan
speed control, which requires the use of a CPU fan with fan speed control design. For optimum
heat dissipation, it is recommended that a system fan be installed inside the chassis.
• Be sure to connect fan cables to the fan headers to prevent your CPU and system from
overheating. Overheating may result in damage to the CPU or the system may hang.
• These fan headers are not configuration jumper blocks. Do not place a jumper cap on the
headers.
6) PCIE_12V (Power Connector)
This power connector can supply extra power to the PCI Express slots on the motherboard.
Connect the power supply cable to this connector when using two graphics cards. Failure to do so
may lead to an unstable system.
1
CPU_FAN
1
SYS_FAN2
1
1
SYS_FAN1 PWR_FAN
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CPU_FAN:
Pin No. Definition
1 GND
2 +12V / Speed Control
3 Sense
4 Speed Control
SYS_FAN2:
Pin No. Definition
1 GND
2 +12V / Speed Control
3 Sense
4 +5V
SYS_FAN1/PWR_FAN:
Pin No. Definition
1 GND
2 +12V
3 Sense
PIin No. Definition
1 NC
1
2 GND
3 GND
4 +12V
Hardware Installation