Dell20PowerEdge R515 Technical Guide3.11 Control Panel/LCDThe PowerEdge R515 includes one of the following control panel configurations: LCD panel (8 hard drive chassis only) LED panel (12 hard drive chassis only)3.11.1 LCD Panel ConfigurationFigure 11 and Figure 12 show the LCD panel configuration for the PowerEdge R515 with 8 HDDs.Figure 11. LCD Panel ConfigurationFigure 12. LCD Panel (Detailed View)The LCD panel is located on the front of the system chassis to provide user access to buttons, display, andI/O interfaces. Features of the system control panel include the following: ACPI-compliant power button with an integrated green power LED (controlled by iDRAC6) 128x20 pixel LCD screen Two navigation buttons One select button One system ID button Non-maskable Interrupt (NMI) button (recessed) Ambient temperature sensorThe LCD panel is a graphics display controlled by iDRAC6. Error codes can be sent to the display by eitheriDRAC6 or BIOS.The system's LCD panel provides system information and status messages to signify when the system isoperating correctly or when the system needs attention.The R515 BIOS has the ability to enter a secure mode through Setup, which locks the Power and NMIbuttons. When in this mode, the power button can still be used to turn on the system, but it cannot be usedto turn off power to the system.For more information on the LCD panel, see the LCD Panel Features (Optional) section in the About YourSystem chapter in the PowerEdge R515 Hardware Owner’s Manual on Dell.com/Support.