Boardview for the MSI MS-16R81 laptop mainboard, version 2.0, packed in a ZIP. MSI designs its own boards and uses the MS-xxxxx numbering, with the trailing digit marking the board variant. A boardview lets you search a reference designator or net and see it highlighted on the PCB layout, speeding up rail measurements and short hunting. Open it in OpenBoardView, FlexBV or a similar viewer, and check that the PCB reads MS-16R81 version 2.0 before trusting the layout.
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 @cynetitsolution. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip