Used ATEM 2 M/E Constellation HD from Blackmagic Design. This is a switcher that supports 20 inputs and 12 outputs via 3G SDI. Purchased in 2023 and used as a sub-unit. Used on-site less than 10 times. Selling due to a change in equipment configuration. I have performed a basic operational check, and there were no problems. There are some scratches from being stored in a rack. Items for sale: ・ATEM 2 M/E Constellation HD main unit ・Product box Please ask any questions in the comments section. Manufacturer's description below: The ATEM 2 M/E Constellation HD is a high-resolution live production switcher with many advanced features! It features a 2 M/E design with 20 3G-SDI inputs with format conversion and 12 independent 3G-SDI Aux outputs. It also supports USB webcam output, a SuperSource processor, DVE, chroma keyers, media players, multiview, and more. It also includes a talkback function and a professional Fairlight audio mixer with EQ and dynamics. Product specifications: https://www.blackmagicdesign.com/jp/products/atemconstellation/techspecs/W-APS-26