RAR archive containing boardview data for board BM5070, labelled as BDV and TVW formats. It is smaller than the ZIP version of similar contents, so compare the two packages if one fails to open. BDV loads in common boardview programs, while TVW needs Teboview or a compatible tool. With a boardview you can locate parts, measure nets and trace shorts without reverse engineering the PCB. Make sure the board number and revision on the PCB match the file first.
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 @schematicslaptop. 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.
7-ZipWinRARThe Unarchiver (macOS)