BIOS firmware package, 6.65 MB RAR, for an HP 282 Pro desktop board numbered 17514-1, a pattern used by Wistron. The catalogue lists Apple as brand, but the name indicates HP, so treat the brand tag with caution. The image is meant to be written to the SPI flash with a programmer to recover a corrupted or non-booting board. Back up the original chip first, check the dump size against the chip capacity and confirm the 17514-1 marking on the PCB.
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 @BiosSchematicWorld. 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 →