BirdDog NDI Wallplate-Dual OutputSPECIAL ORDER PRODUCT NDI Wallplates for Building the Ultimate AV Experience. NDI Wallplates are the answer to elegant and permanent NDI installations. With two models to choose from, Dual Input or Dual Output, they have been designed to make boardroom setups a breeze. Install the Dual Output in the wall to drive content to the TV screens and install the Dual Input into the meeting table to take inputs from laptops and other devices using EDID.