BIOS firmware for the Lenovo ThinkCentre E93z All-in-One, associated with board number 12102-1, packaged as a 5.34 MB RAR. Five-digit numbers with a dash suffix like this one match the Wistron numbering scheme, so the actual board maker is likely Wistron rather than Lenovo. The image can be written to the SPI flash with a programmer to recover a unit that powers on but shows no display or boots erratically. Save the original chip contents before erasing, and check that the image size matches the chip.
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 →