BIOS firmware for a TX520 board, apparently an i5 variant, with PAREB MB 8L 2.0 in the name, which likely refers to an 8-layer motherboard at revision 2.0; the brand and exact device are not stated. Packed as a 4.57 MB RAR, it is used for restoring the SPI flash with an external programmer. Because the identification is vague, confirm the model and revision printed on the PCB, back up the original chip before writing, and make sure the image size equals the flash chip capacity.
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 →