Targus  ACP51USZ USB 2.0 Docking Station with Video Audio pass-through provides a convenient port for your headphones or desktops speakers Supports monitor resolutions up to 2048 x 1152; Windows XP, Windows Vista 32Bit64Bit; Windows 7 32Bit64Bit compatible; and Apple OSX. (AC adapter required) DVI video output connects your laptop to your favorite DVI capable LCD monitor or other display device. 4x USB 2.0 single connection to numerous peripherals including a monitor (DVI), network, audio and up to four USB devices (2 always on for charging) Connects to your Laptop through an available USB slot, utilizing the high-speed USB 2.0 protocol