Figure 4. Front-panel features and indicators—four 3.5 inch cabled hard-drive chassisTable 5. Front panel features and indicators of four 3.5-inch cabled hard-driveItem Indicator, Button, orConnector Icon Description1 Power-on indicator,power buttonThe power-on indicator lights when the systempower is on. The power button controls the powersupply output to the system.NOTE: On ACPI-compliant operating systems,turning off the system using the power buttoncauses the system to perform a gracefulshutdown before power to the system isturned off.2 NMI button Used to troubleshoot software and device drivererrors when running certain operating systems.This button can be pressed using the end of apaper clip.Use this button only if directed to do so byqualified support personnel or by the operatingsystem's documentation.3 System identificationbuttonThe identification buttons on the front and backpanels can be used to locate a particular systemwithin a rack. When one of these buttons ispressed, the system status indicator on the backflashes until one of the buttons is pressed again.Press to toggle the system ID on and off. If thesystem stops responding during POST, press andhold the system ID button for more than fiveseconds to enter BIOS progress mode.To reset the iDRAC (if not disabled in F2 iDRACsetup) press and hold the button for more than 15seconds.4 Video connector Allows you to connect a display to the system.13