The ThinkPad USB 3.0 Ultra Dock is a universal USB docking solution that delivers a premium display experience (up to 4k2k resolution via DP port) and provides quick and easy connection to all your workspace peripherals. Simply plug in a single USB 3.0 cable into your Lenovo PC for instant access to external monitors, USB ports, Gigabit Ethernet, headphones/speakers, USB printers, scanners, keyboard, mouse and more. The Dock can also charge your mobile devices via two USB always power on ports.