This Decora-compatible wall plate dresses up any home theater, conference room or classroom, and provides the final finishing touch to your audio/video installation. Unlike traditional pass-through wall plates, it is constructed by using four-layer computer grade printed circuit boards (PCBs).The PCB traces are engineered to maintain the critical impedance necessary to transfer the delicate digital signal. Made from 20 AWG steel, this strong wall plate fits standard electrical boxes, and is compatible with Leviton Decora brand trim plates.Use the 3.5mm to run the audio using the line of DVI + 3.5mm cables. The dongle on the back will allow for your DVI installation to go where you need the cables inside the electrical box.