PDF schematic labelled AS6530 with the token ZK3, likely an Acer Aspire 6530, with ZK3 looking like a board project code. Neither the brand nor the board maker is stated in the name. The 1.77 MB document is useful for tracing power rails, checking charging and standby circuits, and finding component values when replacing failed parts. Compare the ZK3 code and revision in the title block with the markings on your mainboard before trusting pinouts and part numbers.
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 .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)