The Model 8447 six-channel A/B switch from Electro Standards Laboratories has two channels with RJ45 Cat5e connectors and four channels with MIL-STD-1553B concentric twinaxial connectors. This robust data switch allows the user to share one device among two others for each of its six channels. The switch ports of the device are transparent to all data. All channels are switched simultaneously using the manual push button located on the front panel. When power is lost, the unit reverts to the A position for all channels; upon power restoration, it automatically switches to the last known position.