Asus TS300-E8-RS4-C - Manual (Page 82)

Chapter 4: Motherboard information 4-26
15. Auxiliary panel connector (20-2 pin AUX_PANEL1)
This connector is for additional front panel features including front panel SMB,
locator LED and switch, chassis intrusion, and LAN LEDs.
1. Front panel SMB (6-1 pin FPSMB)
These leads connect the front panel SMBus cable.
2. LAN activity LED (2-pin LAN1_LINKACTLED, LAN2_LINKACTLED)
These leads are for Gigabit LAN activity LEDs on the front panel.
3. Chassis intrusion (4-1 pin CASEOPEN)
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
CASEOPEN and GND pin by jumper cap to disable the function.
4. Locator LED (2-pin LOCATORLED1, LOCATORLED2)
These leads are for the locator LED1 and LED2 on the front panel.
Connect the Locator LED cables to these 2-pin connector. The LEDs will
light up when the Locator button is pressed.
5. Locator Button/Switch (2-pin LOCATORBTN#)
These leads are for the locator button on the front panel. This button
queries the state of the system locator.
6. Reset button (2-pin RESET)
This 2-pin connector is for the chassis-mounted reset button for system
reboot without turning off the system power.