Archive named only after the ux510u model, which suggests material for an ASUS ZenBook UX510U series laptop, though no brand, board number or revision appears in the name. At 978 KB it could hold a schematic, a boardview or both, so inspect the contents after unpacking. Repair documentation like this is used to trace power rails, identify a shorted capacitor or MOSFET and locate test points. ASUS boards carry a 60NB part number and revision on the PCB, which should be compared with the documents before trusting values.
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 @notebookschematic. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.