Gigabyte GA-9SISL Manual - Page 18

CPU_FAN/SYS_FAN1 CPU Fan/System Fan Headers, PMBUS PMBus connector

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3/4) CPU_FAN/SYS_FAN1 (CPU Fan/System Fan Headers) The motherboard has one 4-pin CPU fan header (CPU0_FAN), and one 4-pin (SYS_FAN1) system fan headers. 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 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. CPU_FAN CPU_FAN 1 SYS_FAN1 1 CPU_FAN/SYS_FAN1: Pin No. Definition 1 GND 2 +12V 3 Sense 4 Speed Control SYS_FAN1 • 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. 5) PMBUS (PMBus connector) 1 Pin No. Definition 1 PMBUS_5VSTBY_SCL 2 PMBUS_5VSTBY_SDA 3 PMBUS_ALT_N 5 4 GND 5 P3V3 Hardware Installation - 18 -

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Hardware Installation
- 18 -
•
Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheat-
ing. 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.
3/4) CPU_FAN/SYS_FAN1 (CPU Fan/System Fan Headers)
The motherboard has one 4-pin CPU fan header (CPU0_FAN), and one 4-pin (SYS_FAN1) system fan
headers. 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 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.
Pin No.
Definition
1
GND
2
+12V
3
Sense
4
Speed Control
1
1
CPU_FAN
SYS_FAN1
CPU_FAN/SYS_FAN1:
5)
PMBUS (PMBus connector)
5
1
Pin No.
Definition
1
PMBUS_5VSTBY_SCL
2
PMBUS_5VSTBY_SDA
3
PMBUS_ALT_N
4
GND
5
P3V3
CPU_FAN
SYS_FAN1