A method and apparatus to provide bandwidth control in a high speed line driver circuit is described. The pores connect the first surface and the second surface and are disposed at preselected locations to provide a desired pattern of permeability. The test routines can also perform power-up tests in systems or end products containing the ASIC. A vertically extending member is attached to the housing and includes a face plate that is operable to receive a bracket. A second disk shaped article is disposed in the second extension portion. The base includes an engagement surface with a surface area that is positionable in contact with a bone to atraumatically or traumatically engage the base to the bone.