RioRand (TM) USB 2.0 Multi-Display Adapter USB 2.0 to DVI, HDMI and VGA Multi-Display Adapter - Extend your Windows Desktop Area! General Features: Black design Easily connect additional monitors using a USB 2.0 cable Comes with DVI-I, HDMI and VGA connectors Mirror or extend a comptuer display workspace Enjoy resolutions of up to 1600 x 1200 Allows for effortless multitasking Bus powered - no external supply needed