Boardview for an MSI MS-7B06 board, revision 1.2, stored in a 986 KB RAR archive. The BDV format shows component placement, part designators, nets and pin connections, letting you find a test point or follow a signal from one chip to another without probing blindly. MS-7xxx codes are MSI's desktop mainboard numbers, and the revision printed on the PCB should match before relying on locations. Open the extracted file in a boardview program such as OpenBoardView or FlexBV, ideally side by side with the matching schematic.
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.