RAR archive of about 2 MB for the Lenovo ThinkPad Edge E430 and E530, which the name states were made by Compal. No board number or revision is given, and the contents are not described, so expect a schematic or boardview and confirm after unpacking. Compal boards are normally marked LA- followed by a four-digit code, and that marking on your PCB should be compared with the documents inside. Use the material to follow power sequencing, check rails and locate components during diagnosis.
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 @alischematics. 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.