Repair package for the Lenovo Z580 on Quanta board DALZ3AMB8E0, described as a conversion from discrete graphics to UMA. Such conversions let a board with a failed dedicated GPU run on integrated graphics, usually by changing straps or components and flashing a suitable BIOS. The 7.24 MB RAR probably contains firmware and instructions. DA-prefixed numbers come from Quanta. Back up the original SPI chip, read any included notes carefully, and confirm the PCB number before modifying the board.
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 @schematiclaptopramkushwaha. 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.