Asus M4A78-HTPC/RC - Manual (Page 34)

1.10.2 Internal connectors
1. CPU, Chassis and Power Fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN1–2,
3-pin PWR_FAN)
The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or a total of
1A~2.22A (26.64W 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.
Only the CPU_FAN and CHA_FAN1–2 connectors support the ASUS Q FAN 2 feature.
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