RAR archive of 1.07 MB for a Dell laptop motherboard made by Quanta, board number DAVM8NMB6D0 with the VM9N project code. Quanta uses DA-prefixed numbers on its PCBs, where the middle letters name the project and the final characters indicate the revision, so compare the full string printed on the board before use. Extract the archive with WinRAR or 7-Zip to see whether it holds a schematic, boardview or firmware, and use it for tracing rails and locating components.
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 @ITHINKHS. 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.
7-ZipWinRARThe Unarchiver (macOS)