BIOS archive for the HP Compaq Pro 4300 all-in-one PC, whose mainboard is identified as IPISB. The 2.96 MB RAR should contain a firmware image for the system SPI flash, handy when the AIO stays dark, shows no POST or was left bricked by an interrupted update. Read the board label to confirm IPISB, dump and store the existing chip contents with a programmer before writing, and compare the image size with the flash part so it fits correctly.
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 →