Firmware for the Dell OptiPlex GX520 desktop, version A11 according to the name, packed into a 371 KB RAR archive. The small size suggests an official update package or a compact BIOS image rather than a full flash dump, but the contents are not described further. Technicians use such files to update or restore the system BIOS, either through the vendor flash utility or, for a dead board, by writing the chip directly. Keep a copy of the original firmware before making changes to the machine.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →