The disclosure recites a system and method for identifying an access point for a network. The conversion is performed directly by using an exponential current digital-to-analog converter and a cascaded linear current digital-to-analog converter. The lock plate is positioned within a lower channel of the lower rail for locking the rail assembly in an upright position. The analog ground terminal is connected to the analog ground layer, and the digital ground terminals are connected to the digital ground layers, respectively. The assist frames are adjustable toward and away from the side edges. The second support device includes a plurality of posts located adjacent to edges of the base.