A test module having a lid to force a chip in contact with the test pads using a bed of nails to conform to the shape of the chip. The result is a population of ferrules that can be mated with little or no insertion loss. Electronic message items have some common defined data fields and possibly other differently defined data fields that represent protocol andor application specific properties. The bone anchors and the linkage rod may be locked into place to form a spinal fusion or fixation prosthesis.