The Tiny-Userport-Adapter is a stripped down version of the Scanntronik Userport Expander (rebuild). It is mainly intended to serve as the shortest possible angle adapter while still providing the driven printer output. To get the board small enough it was necessary to replace all through hole components with their SMD versions. Then all components had to be moved to the bottom side of the board. Accordingly, the complete layout had to be changed as well.