GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard - Manual (Page 24)

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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.
DEBUG
PORT
G.QBOFM
1
Pin No. Definition
1 GND
2 Voltage Speed Control
3 Sense
4 PWM Speed Control
7) LED_C1/LED_C2 (RGB LED Strip Headers)
The headers can be used to connect a standard 5050 RGB LED strip (12V/G/R/B), with maximum power
rating of 2A (12V) and maximum length of 2m.
Connect your RGB LED strip to the header. The power pin (marked with a
triangle on the plug) of the LED strip must be connected to Pin 1 (12V) of
this header. Incorrect connection may lead to the damage of the LED strip.
Pin No. Definition
1 12V
2 G
3 R
4 B
1
LED_C2
1
LED_C1
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
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.
For how to turn on/off the lights of the LED strip, please navigate to the "Unique Features" page
of GIGABYTE's website.
12V
RGB LED Strip
1
Connector CPU_FAN SYS_FAN1/2A/2B SYS_FAN3_PUMP CPU_OPT
Maximum Current 2A 2A 2A 2A
Maximum Power 24W 24W 24W 24W