Boardview archive for N4030 with the board code name Arsenal DJ1 and the DIS variant, meaning a discrete graphics version of the motherboard, packed as a 1.05 MB RAR. No board number is given in this name, so confirm it against the PCB label. The layout file inside opens in viewers such as OpenBoardView or FlexBV and shows component placement, nets and test points on both sides of the board. It is handy for locating a shorted capacitor, finding a rail test point or identifying a part before replacing it.
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 @alischematics. 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.