Amazon.com: HDMI Multi-Viewer Switch 4x1, HDMI Quad Seamless Switcher 4 in 1 Out Support 1080P@60Hz & 5 Display Mode, Split Screen for TV/PC/STB/DVD with IR Remote : Electronics
Amazon.com: gofanco Prophecy 1080p Quad Multi-Viewer 4x1 HDMI Switcher with Seamless Switch, Split Screen, 5 Display Modes, Audio Extractor to Stereo, IR Remote/Software/Push Button Selector, TAA Compliant : Electronics
Link-mi 1x3 Hd Multi-screen Extender 1 Dp In 3 Hdmi Out Each Supports 1920x1200 Backward Compatible Video Wall Controller - Accessories - AliExpress