Monoprice Blackbird 4K Mini USB-Powered 1x2 HDMI Splitter 4K Ultra HD: Supports all HDMI video resolutions up to 4K at 30Hz, including 1080p at 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. This allows you to use a standard USB wall charger, a USB charger integrated into a power strip, or an open USB port on your smart TV or Blu-ray Disc player.