So I was looking to power some 3D printed models with 5VDC and thought a USB socket would be perfect to embed into the design. Any USB charger would be able to power the model. I found a set of 10 micro USB sockets on mini pc boards in Amazon for less that six dollars US. So here is a board holder designed to be added to the inside of a model with some super glue. The board is fixed in place in the board holder with a zip tie. A small hole on the bottom of the model exposes the socket to allow a cable to plug in.