A semiconductor device includes a CAM cell array that stores the operation setting information as to the semiconductor device, a controller that controls read and write of the CAM cell array, a row decoder, and a column decoder. In one arrangement the first connector is C-shaped shaped to form a slot and the second T-shaped shaped with a flange of the T wider than the mouth inserted through the mouth. A plurality of shelf dividers attach substantially perpendicularly to a pair of base strips. The first and second digital data are transported from the radio access node to the base unit using a shared transport medium.