Circuit board interconnection device and circuit board assembly

A printed circuit board connecting device (1) for connecting printed circuit boards (3, 5), the printed circuit board connecting device (1) comprising:

• a non-conductive plate (21) having a top side and a bottom side;
• and
• a plurality of interface connections (23) which are arranged in the plate (21) so as to be spaced apart from one another,
• wherein each interface connection (23) has grouped-together conductors (41) which extend through the plate (21) and which are laterally enclosed by the plate material and the end regions of which protruding on the top side and lower side from the plate (21) can be fixed to interfaces (13) of two printed circuit boards (3, 5) to be connected, and therefore the conductors (41) form both a mechanical and an electrical connection between the interfaces (13) of the printed circuit boards (3, 5).