BIOS image for the Dell OptiPlex 990 desktop, with the name listing E93839 and KA0121 codes and a 2MB chip size. The small 177 KB RAR compresses a 2 MB dump intended for the smaller of the board's flash chips. Technicians program it with an SPI programmer to revive a board that no longer posts. Make sure the target chip really is 2 MB, since an image of the wrong size will not fit, and read and archive the existing contents before erasing, as service tag and configuration data live there.
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 →