Asus P8Q77-M - Manual (Page 34)

ASUS P8Q77-M 1-24
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!
3. CPU and chassis fan connectors (4-pin CPU_FAN, 3-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 a CPU fan of maximum 2A (24 W) fan power.
• Only the 4-pin CPU fan supports the ASUS FanXpert and Q-Fan 2 feature.
4. Chassis intrusion connector (4-1 pin CHASSIS)
This connector is for a chassis-mounted intrusion detection sensor or switch. Connect
one end of the chassis intrusion sensor or switch cable to this connector. The chassis
intrusion sensor or switch sends a high-level signal to this connector when a chassis
component is removed or replaced. The signal is then generated as a chassis intrusion
event.
By default, the pin labeled “Chassis Signal” and “Ground” are shorted with a jumper
cap. Remove the jumper caps only when you intend to use the chassis intrusion
detection feature.
P8Q77-M
P8Q77-M Fan connectors
CPU_FAN
CPU
FA
N PW
M
CPU
FA
N IN
CPU
FA
N PW
R
GN
D
GND
+12V
Rotation
CHA_FAN1
GN
D +12V Rotation
CHA_FAN2
+5VSB_MB Chassis Signal GN
D
CHASSIS
P8Q77-M
P8Q77-M Chassis intrusion connector