Asus Maximus Formula Maximus Formula user's manual English Edition Version E33 - Page 59

7. CPU, chassis, and optional fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN1~3, 3-pin PWR_FAN, 3‑pin OPT_FAN1~3) The fan connectors support cooling fans of 350 mA~1000 mA (24 W max.) or a total of 1 A~3.48 A (41.76 W max.) at +12V. Connect the fan cables to the fan connectors on the motherboard, making sure that the black wire of each cable matches the ground pin of the connector. 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! ® GND CPU FAN PWR CPU FAN IN CPU FAN PWM GND +12V Rotation GND +12V Rotation MAXIMUS FORMULA CPU_FAN PWR_FAN CHA_FAN3 OPT_FAN1 CHA_FAN1 OPT_FAN3 OPT_FAN2 CHA_FAN2 CPU_FAN CHA_FAN1 Rotation +12V GND CHA_FAN2 Rotation +12V GND CHA_FAN3 PWR_FAN GND +12V Rotation OPT_FAN1 Rotation +12V GND OPT_FAN2 Rotation +12V GND OPT_FAN3 MAXIMUS FORMULA(Special Edition)/ MAXIMUS FORMULA Fan connectors • Only the CPU_FAN, CHA_FAN1~3, and OPT_FAN1~3 connectors support the ASUS Q-Fan 2 feature. • If you install two VGA cards, we recommend that you plug the chassis fan cable to the motherboard connector labled CHA_FAN1 or CHA_FAN3 for better themal environment. ROG Maximus Formula (Special Edition) / Maximus Formula 2-33