The BirdDog 4K Rackmount securely holds up to two BirdDog 4K NDI encoders/decoders in a 1 RU rack. These include the BirdDog 4K HDMI, 4K SDI, and Quad. It's especially ideal for mounting two BirdDog 4K Quad units, as you'll have eight 4K60 NDI channels at your fingertips in one rack.