This dual monitor USB 3.0 docking station for Mac and Windows expands the display capabilities of your laptop with flexible video output: HDMI and DVI or HDMI and VGA (with DVI to VGA adapter included) The port replicator turns your laptop into a workstation w/ six USB (Type-A) ports and Gigabit Ethernet port plus 3.5 mm audio headphone port Two of the USB 3.0 ports are always-on fast-charge ports