The Blackmagic Design Smartscope Duo 4K Rack Mounted Dual 6G-SDI Monitors is a monitoring solution for studio and location productions that can display video with resolutions up to 3840 x 2160 at 30p. It features two 8" monitors each with a loop through SDI input and output. The inputs are auto sensing/selecting so you don't have to worry about matching the input format, the monitor will display any supported format that you feed it. You can choose to select to display either the input video or one of six scope displays, while the input video passes through the monitor to downstream devices.
You use the USB connector to initialize the monitor on your network, after that you can control the monitors using the supplied software via the Ethernet connector. This allows you to adjust the monitors brightness and color as well as select the monitors display mode - video or scope view. The Smartscope Duo 4K also incorporates a Tally display around the border of the image, which works with industry standard Tally systems. The unit takes up three rack height units, but is less than two inches deep (including the connector depth), which makes it well suited for use in production trucks where space is at a premium. The unit also automatically flips the image if you need to install the unit upside down.