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HDMI compatible 4x1 Quad Multi viewer Switcher 4 in 1 out 1080P Quad Screen Real Time Multiviewer support Five models switching|hdmi switcher|hdmi 4x1hdmi out - AliExpress
4x1 HDMI Quad-Viewer and Seamless Switcher (PRO-QuadView)
HDMI Swithcer 4X1, NIERBO HDMI Quad Multi-Viewer HDMI Switcher 1080p HDMI Splitter Seamless IR Control EU 3D Support 5 Modes for PS3/PC/STB/DVD,Audio Video Connectors