1.12 Connectors

This section describes and illustrates the internal connectors on the motherboard.

1.Hard disk activity LED (2-pin IDE_LED1)

This connector supplies power to the hard disk activity LED. The read or write activities of any device connected to the primary or secondary IDE connector cause this LED to light up.

TIP: If the case-mounted LED does not light up, try reversing the 2-pin plug.

P4PE-X

IDE_LED1

P4PE-X HD Activity LED

2. Chassis intrusion connector (4-1 pin CHASSIS1)

This lead is for a chassis designed with intrusion detection feature. This requires an external detection mechanism such as a chassis intrusion sensor or microswitch. When you remove any chassis component, the sensor triggers and sends a high-level signal to this lead to record a chassis intrusion event.

By default, the pins labeled “Chassis Signal” and “Ground” are shorted with a jumper cap. If you wish to use the chassis intrusion detection feature, remove the jumper cap from the pins.

P4PE-X

CHASSIS1

+5VSB MB

Chassis Signal GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Default)

P4PE-X Chassis Alarm Lead

1-16

Chapter 1: Product introduction