4x1 Quad-Viewer. Simultaneously view four video sources on one display in real time Switch between 5 display modes: One-View, Dual-View (left & right), Quad-View, Quad-View Cycled, Quad-View H mode. Seamless Switching. Seamless source device and display mode switching via front panel push button or included IR remote control. Compatible with most HDMI source devices such as computers, set-top boxes, DVD/Blu-ray players, and projectors. Supported Resolutions. Input: 480i/480p/576i/576p/720p/1080i/1080p || Output: 720p 60Hz & 1080p 60Hz. HDCP 1.4 compliant. Advanced Features. Control Options: 1) Push buttons, 2) IR remote, 3) software control via micro-USB. Firmware upgradeable - to add new features, fix any bugs, improve performance. Metal housing provides excellent EMF protection and improves heat dissipation for reliability and long life. 3 Year Warranty With Premium Customer Support. Fully compliant with certifications/standards: FCC, CE, RoHS. Our products are backed with a 3-year limited warranty and experienced tech support team in Silicon Valley. Contact us via Amazon or the manufacturer. if you have any questions or concerns.