Asus STRIX Z270G GAMING, Manual, Page: 33 / 106

ROG STRIX Z270G GAMING 1-17
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8. CPU, CPU optional, water pump, and chassis fan connectors (4-pin CPU_FAN;
4-pin CPU_OPT; 4-pin ; 4-pin CHA_FAN1-2)
Connect the fan cables to the fan connectors on the motherboard, ensuring that the
black wire of each cable matches the ground pin of the connector.
The CPU_FAN connector supports the CPU fan of maximum 1A (12 W) fan power.
To install more fans, refer to section
2.1.8 Expansion card installation
for details.
Connect the fan of your water cooling kit to the connector.
DO NOT forget to connect the fan cables to the fan connectors. Insuf cient air ow
inside the system may damage the motherboard components. These are not jumpers!
Do not place jumper caps on the fan connectors!
Ensure that the CPU fan cable is securely installed to the CPU fan connector.