System BIOS image for the HP Z230 SSF small form factor workstation, with a 16MB flash size indicated in the name, packed in a 6.26 MB RAR. No board number or version is given. A dump like this is used to recover a desktop board whose firmware is corrupt by writing the SPI chip directly with a programmer. Read and keep the original chip before erasing it, and confirm that the image is exactly 16 MB and the chip on your board has the same capacity, otherwise it will not fit.
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 →