Compressed file for the N3010 model in its UMA build, meaning integrated graphics without a dedicated GPU chip. Brand, ODM board code and revision are absent from the name. At 648 KB it most likely holds the motherboard schematic, used to trace the power sequence, check rails with a multimeter and identify components around a fault. Before relying on it, compare the board number on the PCB, since related models and graphics variants often share names but not layouts. It opens with WinRAR or 7-Zip.
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 @IT_SERVICE_WORLD. 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.