Archive of 607 KB labelled M101z, with no brand, board number or revision in the name. The code alone is not enough to identify the device with certainty, so the extracted contents should be checked to see which board they describe. Small RAR packages in a repair index typically contain a schematic or boardview for tracing power rails, finding components and diagnosing shorts. Before using any values from it, compare the board number and revision silkscreened on the PCB with those shown in the document itself.
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 @generalschematics. 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.