Asus P8Q77-M2 - Manual (Page 35)

ASUS P8Q77-M2 1-23
4. CPU and chassis fan connectors (4-pin CPU_FAN, 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.
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!
• The CPU_FAN connector supports a CPU fan of maximum 2A (24 W) fan power.
• Only the 4-pin CPU fan and 4-pin chassis fan support ASUS Fan Xpert+ feature.
5. 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.
CHA_FAN1
CHA_FAN2
P8Q77-M2
P8Q77-M2 Fan connectors
CPU_FAN
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM GND
CHA FAN PWR
CPU FAN IN
CPU FAN DC Mode
GND
CHA FAN PWR
CPU FAN IN
CPU FAN DC Mode
P8Q77-M2
P8Q77-M2 Chassis intrusion connector
+5VSB_MB Chassis Signal GND
CHASSIS