Gigabyte B550 AORUS PRO AX User Manual page 17

5) SYS_FAN5_PUMP/SYS_FAN6_PUMP (System Fan/Water Cooling Pump Headers)
The fan/pump headers are 4-pin. 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
speed control function requires the use of a fan with fan speed control design. For optimum heat dissipation,
it is recommended that a system fan be installed inside the chassis. The header also provides speed control
for a water cooling pump. Please navigate to the "BIOS Setup" page of GIGABYTE's website and search
for "Smart Fan 5" for more information.
1
SYS_FAN5_PUMP
6) CPU_OPT (Water Cooling CPU Fan Header)
The fan header is 4-pin and possesses a foolproof insertion design. 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 speed control function requires the use of a fan with fan speed control
design.
• 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.
7) LED_CPU (CPU Cooler LED Strip/RGB LED Strip Header)
The header can be used to connect a CPU cooler LED strip or a standard 5050 RGB LED strip (12V/G/R/B),
with maximum power rating of 2A (12V) and maximum length of 2m.
1
1
12V
For how to turn on/off the lights of the LED strip please visit the "Unique Features" webpage of
GIGABYTE's website.
Before installing the devices, be sure to turn off the devices and your computer. Unplug the power
cord from the power outlet to prevent damage to the devices.
Pin No. Definition
1
SYS_FAN6_PUMP
Pin No. Definition
1
Pin No. Definition
Connect the CPU cooler LED strip/RGB LED strip to the header. The
power pin (marked with a triangle on the plug) of the LED strip must
RGB LED
Strip
be connected to Pin 1 (12V) of this header. Incorrect connection
may lead to the damage of the LED strip.
1 GND
2 Voltage Speed Control
3 Sense
4 PWM Speed Control
1 GND
2 Voltage Speed Control
3 Sense
4 PWM Speed Control
1 12V
2 G
3 R
4 B
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