Archive for the Lenovo G480 referencing LG4858L with the number 11326, packed as a 1.96 MB RAR. The LG4858L code and 11326 likely identify the board design and its version, so check both against the markings on the motherboard. The (1) in the name only marks a duplicate copy. Expect schematic material for tracing supply rails, checking power sequencing, finding components near a short and confirming connector pinouts. Extract the archive with a standard tool and read the title block to confirm the revision.
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 @generalschematics. 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.