USB to Dual HDMI Adapter connects up to 2x HDMI monitors (1x 4K 30Hz + 1x 1080p) to a computer using the built-in USB-A/USB-C cable; 2ch HDMI Audio; USB to HDMI Converter is bus-powered; 4" (11cm) attached cable - Supports 3 displays in extended mode incl. the laptop screen; 4K output supports ultrawide displays up to 3440x1440 30Hz - Multi-Monitor Video Adapter works with Windows/macOS/Chrome OS - Attached USB-A to USB-C dongle to connect to USB Type-C laptops/desktops; Compact form factor