12 About Your SystemFront-Panel Features and IndicatorsFigure 1-1. Front-Panel Features and IndicatorsItem Indicator, Button,or ConnectorIcon Description1 LED panel The LED panel has four diagnosticindicator lights that display error codesduring system startup. See "DiagnosticLights" on page 19.2 Power-on indicator/power buttonThe power-on indicator lightswhen the system power is on.The power button controls the DC powersupply output to the system. When thesystem bezel is installed, the powerbutton is not accessible.NOTE: When powering on the system,the video monitor can take from severalseconds to over 2 minutes to display animage, depending on the amount of memoryinstalled in the system.NOTE: On ACPI-compliant operatingsystems, turning off the system using thepower button causes the system to performa graceful shutdown before power to thesystem is turned off.NOTE: To force an ungraceful shutdown,press and hold the power button for5 seconds.2 4 85 7316