【Work as 4 Port HDMI KVM Switch】One set of keyboard and mouse to control 4 computers at the same time. Support mouse crossing & roaming in 4 Equal Screen Mode.(the keyboard follows synchronously) 【Work as Seamless HDMI Multiviewer 4x1】Enjoy 6 display modes on Arvitek HDMI Multi-viewer: PIP (picuture in picture), Full Screen Mode, Dual Screen Mode, 4 Equal Screen Mode and 4 Screen Mode (1 big 3 small). 【Multiple Control Modes】Plug and play, no drive need. Support Button + Remote + Hot-key seamless switching. (More hot-key usage in the user manual) 【4K@30Hz High Resolution】4K HDMI quad Multiviewer provide visual feast at 3840x2160@30Hz, 1920x1080@60Hz and downscaling. Compatible HDMI1.4 and HDCP 1.4. 【What You Get】Packing List: 1 x HDMI Quad Multi-viewer, 4 x USB Cable, 1 x Power Adapter, 1 x Remote, 1 x User Manual.