Add HDMI and DVI as well as audio and Gigabit Ethernet connection ports to a laptop computer through a single USB 3.0 port. Compatible with USB 3.0 equipped laptops such as Toshiba Satellite C55. Comparable to Dell 3320446, Acer NP.DCK11.003 and Toshiba PA3927U1PRP. Dual monitor HDMI + DVI video out. Supports up to 1920x1200 2x USB 3.0 + 4x USB 2.0 Ports.