Compressed package for the Z61AE, 1.26 MB, packed with RAR. No revision, chipset or content information appears in the name, so open it with WinRAR or 7-Zip to see what it contains. Typical repair archives include a schematic for tracing signals and voltages, a boardview for finding parts and test points, or a BIOS image for reflashing. Before acting on any value or pinout, confirm the variant and revision on the PCB, and back up the existing flash chip before writing a dump.
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 @IT_SERVICE_WORLD. 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.