Look here: Honda HIM inner boards
4 screws on bottom
2 printed circuited boards
Top board 3557-1235-00. Rev A – the first and 2006-03. PCB design is learned from Honda or their partners and cloned.
Plastic is cheap. You can see broken screw holes.
Board 3557-1025-00, Revision A, date 2006-03.
The HIM diagnostic tool is confirmed to work well with Honda HDS