Blackmagic Design Teranex Mini are designed to be racked side by side, with three converters fitting in 1RU, six in 2RU, and nine in 3RU. When multiple units are racked side by side, variable speed fans pull from one unit into the next to facilitate optimal air flow. If a fan fails adjacent Teranex Mini will increase fan speed, to prevent overheating! And because they're small and lightweight, you can even mount them in the rear of a rack or road case!