Apple MacBook Air A1466 logic board 820-00165-A files in a 3.73 MB RAR archive. A1466 is the 13-inch MacBook Air model number and 820-00165 the logic board number, with A as the revision letter. The archive size fits a schematic with or without boardview, used to trace power rails, locate test points and isolate shorted components. Apple fitted several logic boards to the A1466 across years, so confirm the 820 number on your board before relying on these documents.
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 @SCHEMATICWORLD. 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.