Hard Disk Activity Led Connector (4-Pin Hdled1) - Asus Z10PA-D8 Series User Manual

12.

Hard disk activity LED connector (4-pin HDLED1)

This LED connector is for the storage add-on card cable connected to the SATA or
SAS add-on card. The read or write activities of any device connected to the SATA or
SAS add-on card causes the front panel LED to light up.
13. Chassis Intrusion (2-pin INTRUSION1)
These leads are for the intrusion detection feature for chassis with intrusion sensor or
microswitch. When you remove any chassis component, the sensor triggers and sends
a high level signal to these leads to record a chassis intrusion event. The default setting
is short CHASSIS# and GND pin by jumper cap to disable the function.
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Chapter 2: Hardware information