Asus Rampage III Black Edition - Manual (Page 69)

6. CPU, chassis, and optional fan connectors
(4-pin CPU_FAN; 4-pin CPU_OPT; 4-pin CHA_FAN1/2/3; 4-pin OPT_
FAN1/2/3)
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.
• If you install two VGA cards, we recommend that you plug the rear chassis
fan cable to the motherboard connector labeled OPT�FAN1/2/3 for better
thermal environment.
Do not forget to connect the fan cables to the fan connectors. Insufficient air
flow inside the system may damage the motherboard components. These are
not jumpers! Do not place jumper caps on the fan connectors!
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