Use the 12G BD SFP optical module adapter with the Blackmagic Design Studio Camera 4K or ATEM switcher. This adapter allows you to control either the Studio Camera 4K or ATEM switcher from farther away, extending and controlling video signals over fiber-optic cable as far as 28 miles from each other. Designed for Blackmagic gear, the 12G BD SFP optical module adapter adds a fiber-optic connection to any device that supports SFP cages. ATEM Studio Converter is required to set up this adapter. To add talkback, use with the ATEM Talkback Converter.