The smallest of this group at 26.5 KB, this PDF carries the code 3LN01SS, resembling a discrete semiconductor part number with an SS suffix, and is catalogued as a schematic. Nothing in the name identifies a laptop, brand or motherboard. Its content is likely limited to one part: pinout, maximum ratings and outline. Use it when a small marked device near a power path needs identifying, when orienting meter probes, or when searching for an equivalent. Check the full marking and package before trusting the match.
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 @cyberlanelectonik. 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.