RAR archive of 558 KB covering models li3710 and li3910 on the Quanta EF7 board. The (1) in the name only marks a duplicate copy. Quanta documentation for a design like this is typically a schematic set that shows power sequencing, voltage regulators, the embedded controller and connector pinouts. A repair technician can use it to measure rails at test points, check MOSFETs on the input path and follow signals between chips. Make sure the EF7 code and revision on the PCB match the drawing, then unpack the archive with any RAR utility.
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.