About this item 🌟【5 Ways Viewing Screen】：The 4X1 Quad MultiView Selector support 5 viewing modes. You could see 4 HDMI input sources screen on one monitor by 4 ways, also can only see only one HDMI input source by full screen 🌟【HDMI Switch 4 in 1 out】: 4 HDMI Input ports, 1 HDMI output port. Support Connect 4 HDMI input device and one HDMI Display device on Switch box, avoid frequently plugging and unplugging on HDMI Display device;