Compressed package for the Foxconn W920 mainboard marked PVT, the production validation revision that normally matches shipping hardware. At 714 KB it most likely holds schematic pages, though the file name does not state its exact contents. Technicians open such PDFs to follow power sequencing, find test points and isolate shorts on rails feeding the CPU and chipset. It is a close relative of the W930 design, yet the two boards are not interchangeable, so always confirm the exact model printed on the PCB.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.