Package for the Apple MacBook Air 11-inch, model A1465, tagged with project code J110. At 1.16 MB the RAR likely contains schematic or boardview files, though the name does not specify which. Repair technicians use such documents to follow power rails, identify circuits around charging and the SoC area, and find test points when checking for a short. A1465 had several board generations, so compare the 820- number silkscreened on the logic board with the documentation first.
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 @Mac_Shematic_Santale. 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.