Our 3D CAD supplier models have been moved to 3Dfindit.com, the new visual search engine for 3D CAD, CAE & BIM models.
You can log in there with your existing account of this site.
The content remains free of charge.
Connection points are marked by a x symbol.
In the context menu of each connection point the command New rule is found, which will open the dialog box Rule properties. Therein you can define which Part the selected part is to be connected to.