Boardview in a ZIP archive for an IO daughterboard labelled LSM211P revision 1.0, associated with the Compal LA-L978P board number. LA- codes belong to Compal, a major ODM for Dell, Lenovo, HP and others. Small IO boards carry USB, audio or card reader circuits, and this layout shows their part placement and nets in a boardview viewer such as OpenBoardView or FlexBV. Use it to trace connector pins and find blown fuses or shorted capacitors, after checking that the code printed on your IO board matches.
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 @cynetitsolution. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.