Generic Orange Pi PCB drawing archive, 175 KB in RAR format, holding DWG mechanical files. The name does not say which Orange Pi model or revision it covers, so open the contents and compare the outline and connector layout with your board before using it. DWG drawings open in AutoCAD, DWG TrueView or LibreCAD and show board dimensions, mounting holes and connector positions. They serve enclosure design and physical fitting rather than circuit diagnosis, for which a model-specific schematic is needed.
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.