Gigabyte GA-EX58-UD3R Manual - Page 24
/5 CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3/PWR_FAN Fan Headers, NB_FAN North Bridge Fan Header
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3/4/5) 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. CPU_FAN: Pin No. Definition 1 1 GND 2 +12V / Speed Control CPU_FAN 3 Sense 4 Speed Control 1 SYS_FAN2 SYS_FAN2: Pin No. Definition 1 GND 2 +12V / Speed Control 3 Sense 4 Reserve 1 SYS_FAN3 1 SYS_FAN1/ PWR_FAN SYS_FAN1/SYS_FAN3/PWR_FAN: Pin No. Definition 1 GND 2 +12V 3 Sense 6) NB_FAN (North Bridge Fan Header) Connect the North Bridge fan cable to this header. The fan header has 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. Pin No. Definition 1 1 GND 2 +12V 3 NC • Be sure to connect fan cables to the fan headers to prevent your CPU, North Bridge and system from overheating. Overheating may result in damage to the CPU/North Bridge or the system may hang. • These fan headers are not configuration jumper blocks. Do not place a jumper cap on the headers. Hardware Installation - 24 -