Gigabyte GA-X58A-UD9 User Manual page 30

3) PCIE_12V_1/PCIE_12V_2 (Power Connectors)
The power connectors provide auxiliary power to the onboard PCI Express x16 slots. When two or more
graphics cards are installed, please connect the power cables from the power supply to the PCIE_12V_1
and PCIE_12V_2 connectors, or system instability may occur.
4/5/6) CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3/PWR_FAN (Fan Headers)
The motherboard has a 4-pin CPU fan header (CPU_FAN), a 4-pin (SYS_FAN2) and two 3-pin (SYS_
FAN1/SYS_FAN3) 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 CPU fan speed con-
trol, 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 over-
heating. 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.
Hardware Installation
1
PCIE_12V_1
1
PCIE_12V_2
1
CPU_FAN
1
SYS_FAN2
1
PWR_FAN
1
SYS_FAN1/SYS_FAN3
- 30 -
Pin No. Definition
1 VCC
2 GND
3 GND
4 +12V
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 Reserve
SYS_FAN1/SYS_FAN3/PWR_FAN:
Pin No. Definition
1 GND
2 +12V
3 Sense