1.[USB C Hub 4-in-1 Massive Expansion] Extends your laptop's USB-C port with 1 100W PD Charging port, 1 USB-A 3.0 data port, 1 USB-A 2.0 data port and 1 4K@30Hz HDMI output port. All ports could work simultaneously, bringing you a tidy workspace. We suggest connecting the hub to the main device first, and then connect the accessories to the ports. 2.[Powerful Pass-Through Charging] The usb c hub 100W PD port compatible with USB-C Power Delivery to provide high-speed pass-through charging to your laptop up to 85W (device consumes 15W, without data function). It also supports USB C 2.0 data transmission. 3.[Fast Transmission] USB-A 3.0 data port can transfer pictures, music, movie at up to 5Gbps, while USB-A 2.0 port up to 480bps. Both USB-A 3.0 and USB-2.0 port support to connect hard drive, thumb disk, mouse, keyboard and more USB devices. 4.[4K@30Hz Media Display] Mirror or extend your screen by HDMI port and directly stream 4K@30Hz or full HD 1080P video to HDTV, Monitor or Projector. Plug and play, this USB C HDMI adapter no external drivers required.