Impressive image quality with 4K support The video switch maintains Ultra HD 4K picture quality while switching between content from HDMI source devices - including Blu-ray players or DVD players, computer systems, video game consoles, digital cable and satellite boxes and A/V receivers. 4K support ensures a higher level of image clarity and visibility, delivering four times the resolution of 1080p - 8.29 million pixels versus 2.07 million pixels. Fast and easy operation Enjoy hassle-free operation with three switching modes: Fast auto-switching: ensures minimal time for switching between HDMI sources. The switch provides effortless operation with advanced auto-sensing - it detects the latest connected HDMI source and automatically switches to it. Priority switching: identifies one port to take first priority for HDMI sources when multiple sources are connected, ideal for applications such as digital signage. Manual switching: enables you to manually select your HDMI source with front-panel buttons that are easy to use. The included IR remote control and RS-232 serial connection enable you to select your desired input source remotely. Hassle-free setup with plug-and-play installation The switch also saves time during setup with EDID emulation, which ensures that all of your display settings, such as native resolution and refresh rate, are communicated between your display and video source devices. EDID emulation maximizes compatibility with your 4K display to ensure a convenient plug-and-play installation and the sharpest image quality. The VS221HD4KA is backed by a 2-year StarTech.com warranty and free lifetime technical support.