ASUS ESC4000 G4 Series4-1712. Auxiliary panel connectors (20-pin AUX_PANEL1, 20-pin AUX_PANEL2)This connector is for additional front panel features including front panel SMB, locatorLED 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_LED, LAN2_LED)These leads are for the Gigabit LAN activity LEDs on the front panel.3. Locator LED (2-pin LOCATORLED1, 2-pin LOCATORLED2)These leads are for the locator LED1 and LED2 on the front panel. Connect theLocator LED cables to these 2-pin connector. The LEDs will light up when theLocator button is pressed.4. Locator Button/Switch (2-pin LOCATORBTN)These leads are for the locator button on the front panel. This button queries thestate of the system locator.5. LAN activity LED and USB port (2-pin LAN3_LED, LAN4_LED, USB ports)These leads are for the Gigabit LAN activity LEDs and USB ports on the frontpanel.