Driver Details

Dell Optiplex GX520/GX620 System BIOS

This package provides the Dell System BIOS Update and is supported on OptiPlex GX520/GX620 running the following Operating Systems: Windows and DOS.

Fixes & Enhancements

- Fixed SMBIOS memory reporting for systems with 2 DIMM slots.

- Added support for Cedar Mill/Presler D0 step processors.
- Enhanced internal hard drive diagnostics tests reporting.
- Enhanced hard drive password functionality.
- Enhanced support for mismatched memory.
- Enhanced module bay functionality.
- Enhanced OROM shadowing into BIOS.
- Enhanced PCIE read completion boundary function.


Version A10, A10



Release date

01 Nov 2006

Last Updated

21 Mar 2014


Available formats

File Format:Windows/DOS
File Name:GX620A10.EXE
Download Type:HTTP
File Size: 524 KB
Format DescriptionThis file format consists of a BIOS executable file. The Universal (Windows/MS DOS) format can be used to install from any Windows or MS DOS environment.
To ensure the integrity of your download, please verify the checksum value.
Not available
Not available

By downloading, you accept the terms of the Dell Software License Agreement.

Installation instructions
BIOS Update Executable for Windows/DOS

1. Click Download File, to download the file.
2. When the File Download window appears, click Save to save the file to your hard drive.

Run the BIOS update utility from Windows environment
1. Browse to the location where you downloaded the file and double-click the new file.
2. Windows System will auto restart and update BIOS while system startup screen.
3. After BIOS update finished, system will auto reboot to take effect.

Run the BIOS update utility from DOS environment (Non-Windows users)
1. Copy the downloaded file to a bootable DOS USB key.
2. Power on the system, then Press F12 key and Select "USB Storage Device" and Boot to DOS prompt.
3. Run the file by typing copied file name where the executable is located.
4. DOS System will auto restart and update BIOS while system startup screen.
5. After BIOS update finished, system will auto reboot to take effect.

Note 1: You will need to provide a bootable DOS USB key. This executable file does not create the DOS system files.
Note 2: Please make sure you suspend BitLocker encryption before updating BIOS on a BitLocker enabled system.
If you don't enable BitLocker on your system you can ignore it.
My download lists
Sign In

My Download List-#1

Drivers help and tutorials

Warning: Do not turn off your computer or disconnect from your power source while updating the BIOS or you may harm your computer. During the update, your computer will restart and you will briefly see a black screen.

My download lists

My download lists enables you to create and save lists of drivers to install at a later time. Lists can only be saved by logging into your existing account or creating a new one, and selecting “Save this list.”
Learn more

This driver has been tested by both the independent software vendor (ISV) and Dell on the operating systems, graphics cards, and application supported by your device to ensure maximum compatibility and performance. Details

Dell recommends the customer review specifics about the update to determine if it applies to your system. The update contains changes that impact only certain configurations, or provides new features that may/may not apply to your environment.