Driver Details

Dell OptiPlex System BIOS, A04

The following problems in the A03 BIOS were corrected to generate the A04 BIOS:

1. ISA Shadow I/O bit in bridges.

2. Prefetchable memory support for devices behind bridge.

3. Make PS/2 mode default for on-board parallel port.

4. LPT Port detection fix.

5. Disable DAC snoop for Oxygen card DAC.

6. Assign Non-VGA I/O to bridge for VGA behind the bridge.

7. Allow user to adjust boot order from FD-PNP-HD to FD-HD-PNP.

8. Fix auto power down possibility at power-up.

9. Force parallel port to allow IRQ to float.

10. Corrected wrong byte order in PCI video ROM class code field.

Fixes & Enhancements


Version A04, A04



Release date

15 Aug 2000

Last Updated

03 Nov 2011



Available formats

File Format:Hard-Drive
File Name:Gs_A04.exe
Download Type:HTTP
File Size: 122KB
Format DescriptionThis file contains a compressed (or zipped) set of files. Download the file to a folder on your hard drive, and then run (double-click) it to unzip the set of files. Follow the instructions to complete the installation.
To ensure the integrity of your download, please verify the checksum value.
Not available
Not available
Not available

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

Compatible Systems

Supported Operating Systems


Applies to

OptiPlex System BIOS

Installation instructions

Important Information

My Download List-#1 (0 )

Drivers help and tutorials

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.