This docking station with power expands the potential of your tablet, laptop, Chromebook, MacBook, smartphone or PC USB-C or Thunderbolt 3 port. It''s ideal for transmitting digital audio and video to a large display, adding a thumb drive or other USB peripheral, powering and charging a PD charging-compliant mobile device, connecting to a Gigabit Ethernet network and more. With a source device that also supports USB DisplayPort Alt Mode, you can extend video from your primary display to another, duplicate the same video on both displays, or change the second display to your primary. To send digital audio and Ultra High Definition video to a 4K-ready HDMI or DisplayPort TV, projector or monitor, connect the corresponding port to the display using an HDMI or DP cable (sold separately). The HDMI and DisplayPort ports support UHD video resolutions up to 3840 x 2160 (4K x 2K) at 30 Hz. The VGA port supports high-definition resolutions up to 1920 x 1200, including 1080p, at 60 Hz.