Multifunction Expansion Freedom from interface limitations: Rich interfaces to meet the needs of different scenarios Volume knob Quick Adjustment: Rotate to control volume level, tap to mute RGB Ambient Lighting Add color to your desktop:Lighting mode can be switched with the light key,Dynamic softness without glare 4K Screen Extension Great for the office: Connect to a monitor to mirror or expand the screen,Supports 4K/60Hz video output 3 interface options to choose: Gigabit Ethernet port/2.5G Ethernet port/Audio port three versions to choose from, you can choose to buy the product according to your needs!