4K Ultra HD: Supports all HDMI video resolutions up to 4K @30Hz, including 1080p @60Hz. 2x HDMI Outputs: Distribute 4K UHD HDMI video from a single source to two high-resolution displays. USB-Powered: Rather than using a proprietary AC power adapter, which can get lost in a move and which requires an open AC power socket, it uses a basic USB connection for its power. Monoprice not only stands behind every product we sell with a 1 year replacement warranty, we offer a 30-day money back guarantee as well! If the product you purchase does not satisfy your needs, send it back for a full refund. Monoprice's rugged design and rigid quality control standards deliver high quality products at fair prices.