Asus P7H55-M SI User Manual - Page 22

P7H55-M SI Chassis intrusion connector

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4. CPU and Chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN) 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. They are not jumpers! DO NOT place jumper caps on the fan connectors. CPU_FAN CPU FAN PWM CPU FAN IN CPU FAN PWR GND P7H55-M SI CHA_FAN P7H55-M SI fan connectors GND CHA FAN PWR CHA FAN IN 5. Chassis intrusion connector (4-1 pin CHASSIS) This connector is for a chassis-mounted intrusion detection sensor or switch. 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. +5VSB_MB Chassis Signal GND P7H55-M SI CHASSIS P7H55-M SI Chassis intrusion connector 1-12 Chapter 1: Product introduction

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4.
CPU and Chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN)
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. They are not jumpers! DO NOT
place jumper caps on the fan connectors.
P7H55-M SI
P7H55-M SI fan connectors
GND
CHA FAN PWR
CHA FAN IN
CHA_FAN
CPU_FAN
CPU FAN PWM
CPU FAN IN
CPU FAN PWR
GND
5.
Chassis intrusion connector (4-1 pin CHASSIS)
This connector is for a chassis-mounted intrusion detection sensor or switch. 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.
+5VSB_MB
Chassis Signal
GND
CHASSIS
P7H55-M SI Chassis intrusion connector
P7H55-M SI
Chapter 1: Product introduction
1-12