Boardview for a board coded TE7-MB-D, packed as a small ZIP archive; BV in the name stands for boardview. The name gives no brand or model, and the MB-D ending likely marks the board revision. After extracting, open the file in a viewer such as OpenBoardView or FlexBV to locate components, read part references, follow nets and find test points while measuring. Verify that the code silkscreened on the PCB matches TE7-MB-D before trusting placements.
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 @ITHINKHS. 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