Owner's Manual
Table Of Contents
- Dell PowerEdge R920 System Owner's Manual
- About Your System
- Using The System Setup and Boot Manager
- Installing System Components
- Recommended Tools
- Front Bezel (Optional)
- Opening And Closing The System
- Inside The System
- Cable Management Tray
- System Memory
- General Memory Module Installation Guidelines
- Mode-Specific Guidelines
- Advanced ECC (Lockstep)
- Memory Optimized (Independent Channel) Mode
- Memory Sparing
- Memory Mirroring
- Fault Resilient Memory
- Sample Memory Configurations
- Removing A Memory-Riser Blank
- Installing A Memory-Riser Blank
- Removing A Memory Riser
- Installing A Memory Riser
- Removing Memory Modules From The Memory Riser
- Installing Memory Modules
- Memory Riser And Fan Cage
- Hard Drives
- Optical Drive (Optional)
- Cooling Fans
- Internal USB Memory Key (Optional)
- Expansion Cards And Expansion-Card Risers
- Expansion Card Installation Guidelines
- Removing The Left Expansion Card Riser Blank
- Installing The Left Expansion Card Riser Blank
- Removing The Right Expansion Card Riser Blank
- Removing An Expansion Card From Expansion-Card Risers 2 and 3
- Installing An Expansion Card Into The Expansion-Card Riser 2 and 3
- NDC Riser (I/O Riser 1)
- Network Daughter Card
- SD vFlash Card
- Internal Dual SD Module
- Internal SD Card
- Integrated Storage Controller Card
- RAID Battery
- Processors
- Power Supplies
- Hot Spare Feature
- Removing An AC Power Supply
- Installing An AC Power Supply
- Wiring Instructions For A DC Power Supply
- Assembling And Connecting The Safety Ground Wire
- Assembling The DC Input Power Wires
- Removing A DC Power Supply
- Installing A DC Power Supply
- Removing The Power Supply Blank
- Installing The Power Supply Blank
- Power Distribution Board
- System Battery
- Hard-Drive Backplane
- SAS Expander Daughter Card
- Control Panel Board
- System Board
- Troubleshooting Your System
- Safety First—For You And Your System
- Troubleshooting System Startup Failure
- Troubleshooting External Connections
- Troubleshooting The Video Subsystem
- Troubleshooting A USB Device
- Troubleshooting A Serial I/O Device
- Troubleshooting A Wet System
- Troubleshooting A Damaged System
- Troubleshooting The System Battery
- Troubleshooting Power Supplies
- Troubleshooting Cooling Problems
- Troubleshooting Cooling Fans
- Troubleshooting System Memory
- Troubleshooting An Internal USB Key
- Troubleshooting An SD Card
- Troubleshooting An Optical Drive
- Troubleshooting A Hard Drive
- Troubleshooting A Storage Controller
- Troubleshooting Expansion Cards
- Troubleshooting Processors
- Using System Diagnostics
- Jumpers And Connectors
- Technical Specifications
- System Messages
- Getting Help

To assign a system and/or setup password:
1. To enter System Setup, press <F2> immediately after a power-on or reboot.
2. In the System Setup Main Menu, select System BIOS and press <Enter>.
The System BIOS screen is displayed.
3. In the System BIOS screen, select System Security and press <Enter>.
The System Security screen is displayed.
4. In the System Security screen, verify that Password Status is Unlocked.
5. Select System Password , enter your system password, and press <Enter> or <Tab>.
Use the following guidelines to assign the system password:
– A password can have up to 32 characters.
– The password can contain the numbers 0 through 9.
– Only lower case letters are valid, upper case letters are not allowed.
– Only the following special characters are allowed: space, (”), (+), (,), (-), (.), (/), (;), ([), (\), (]), (`).
A message prompts you to re-enter the system password.
6. Re-enter the system password that you entered earlier and click OK.
7. Select Setup Password, enter your system password and press <Enter> or <Tab>.
A message prompts you to re-enter the setup password.
8. Re-enter the setup password that you entered earlier and click OK.
9. Press <Esc> to return to the System BIOS screen. Press <Esc> again, and a message prompts you to save the
changes.
NOTE: Password protection does not take effect until the system reboots.
Deleting Or Changing An Existing System And/Or Setup Password
Ensure that the Password jumper is set to enabled and the Password Status is Unlocked before attempting to delete or
change the existing System and/or Setup password. You cannot delete or change an existing System or Setup password
if the Password Status is Locked.
To delete or change the existing System and/or Setup password:
1. To enter System Setup, press <F2> immediately after a power-on or restart.
2. In the System Setup Main Menu, select System BIOS and press <Enter>.
The System BIOS screen is displayed.
3. In the System BIOS Screen, select System Security and press <Enter>.
The System Security screen is displayed.
4. In the System Security screen, verify that Password Status is Unlocked.
5. Select System Password, alter or delete the existing system password and press <Enter> or <Tab>.
6. Select Setup Password, alter or delete the existing setup password and press <Enter> or <Tab>.
NOTE: If you change the System and/or Setup password a message prompts you to re-enter the new
password. If you delete the System and/or Setup password, a message prompts you to confirm the deletion.
7. Press <Esc> to return to the System BIOS screen. Press <Esc> again, and a message prompts you to save the
changes.
NOTE: You can disable password security while logging on to the system. To disable the password security, turn
on or reboot your system, type your password and press <Ctrl><Enter>.
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