*This 4X1 switcher makes the user gets live picture-in-picture (PiP ) video preview of each connected device, which makes it simple and intuitive to switch among the cable box, the disc player, the game console, any other HDMI-connected sources. It supports all HD formats including 720p,1080i,1080p,4Kx2K, thus it’s more suitable for home theater systems. * Metal box * Support 3D ,4Kx2K
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