Specifications:

Expand the function of your ThinkPad X220 Series ultraportable or tablet with the sleek and portable ThinkPad UltraBase Series 3. This simple quick attach docking solution adds a wide array of expansion capabilities including an optical drive bay but it is small enough to carry anywhere. Features include Thinner and lighter design for easy portability. Ideal for use in the office at home or on the road. Ultrabay Slim device bay for optical drive or second hard drive. For a list of compatible options see www.lenovo.com/support/docks Digital and analog video support. VGA monitor port and Display Port. For more information on supported monitor configurations see www.lenovo.com/support/docks Audio capability- Pass through speakers microphone in headphone out Gigabit Ethernet (RJ-45) Four USB 2.0 ports System power on button and easy ejection lever Integrated key lock and optional cable lock slot for security Power pass through to fuel your system and recharge the battery Uses the ThinkPad 65W adapter or ThinkPad 90W adapter which ship with laptops and are also available for sale separately ODD not included.