The DS901-138 is a pre-configurated plate for the PNP415 units.
The DS901-138 is a 2-power entry receptacle plate with 4 snap-in ports (2-USB and 2-RJ45) and HDMI port designed for the PNP415. Each signal connector is connected via a 6-foot cable to its corresponding male plug at the opposite end. The AC power cable is terminated with standard NEMA plugs at the end of 9-foot cables.
The DS901-138 design allows the plate to be easily installed into PNP415 unit. Just remove the top and slide the panel into place.