The Retractable HDMI Adapter Ring Mounting Box for Crestron Table Boxes allows you to expand the installation options of your Retractable Universal HDMI Adapter Ring so that you can connect nearly any device to an in-room display - ideal for Crestron table boxes in conference rooms and other meeting spaces. With only four self-tapping screws, the mounting box allows for easy installation of the Retractable HDMI Adapter Ring.