Mechanical drawing archive for the Orange Pi PC Plus, revision 1.1, compressed into a 108 KB RAR file. The contents describe the physical board: outline dimensions, mounting holes and placement of ports and headers. CAD applications such as AutoCAD or DWG TrueView open drawings of this kind. They are used for designing enclosures, panel cutouts and brackets, or for spotting a connector position. For electrical troubleshooting, use the PC Plus v1.1 schematic, and confirm the board revision 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 @boardview. 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.