OneLink delivers data, driver-free video, and power through a single convenient connector; Unlike USB docks the Onelink Dock delivers video with no compression, no drivers and no impact on image quality and notebook performance; Power button on dock mirrors system power button; Available ports on Front Panel: (a) 2x USB 3.0 (One with Always-On Mobile Device Charging) - Ideal for use with memory keys, hard drives and other quick access devices, (b) Stereo / Mic Combo Audio Port; Available ports on Rear Panel: (a) 2x USB 2.0 - Ideal for most USB devices, including printers, keyboards, and mice, (b) HDMI, (c) Gigabit Ethernet (10/1000), (d) DC Power; Cable lock slot for physical security on the side of the ThinkPad OneLink dock