kylecroft

Hi I am planning on using a C2175A HP Printer Power Supply. It was originally for a HP Deskjet 612C. Does anyone know what size connector this has? I have a size N jack from radioshack and it is just a little bigger than that. Also, what parts are the Outer Diameter and Inner Diameter? Is the little rod that sticks into the hole on the connector the ID?? Thanks Kyle