The Plugable UD-3900 USB 3.0 Universal Docking Station for Windows is a versatile accessory designed to expand the connectivity options of your laptop. With compatibility for various laptop sizes and brands, this docking station is a practical solution for those who need multiple ports for their devices. The unit includes VGA, DVI, HDMI, Ethernet, USB 3.0, and USB 2.0 ports, providing ample connectivity options for users. Made from rigid plastic with passive cooling, this docking station also features a built-in USB port for added convenience. With a one-year manufacturer warranty, the Plugable UD-3900 is a reliable and durable choice for expanding your laptop's capabilities.