Extron SW4 3G HD-SDI Video Switcher 4x1 SDI Multi-Rate Tested

Vellbox SDI 4x1 Switcher (4 inputs 1 output)

Extron MLC Plus 100 Controller w/ Surface Mount Enclosure & Edge Mount

Focus Enhancements HX-2 Video Switcher HD / SD Mixer HX2 HD-SDI

BLACKMAGIC DESIGN STUDIO VIDEOHUB SDI ROUTING SWITCHER 16x32 SD HD VIDEO SWITCH

Extron SW4 3G HD-SDI Multi-Rate Video Switcher

Marshall Electronics VSW-2000 4 x 1 3G/HD/SD-SDI Switcher

Used Blackmagic Design Smart Videohub CleanSwitch 12 Inputs x 12 Outputs