The 8G820V40985 is a 4-port HDMI switch from Dremec. This switch allows you to connect up to four different HDMI devices together and then select between them with a remote control. With it, you can watch one video source over four devices, make all four devices switch to the same video source, or access different video sources on different devices. It supports various audio formats, including Dolby TrueHD, Dolby Digital Plus, DTS-HD Master Audio, LPCM and more. The 8G820V40985 also supports 3D video, as well as HDR and HDCP 2.2 pass-through.