Lenovo (0A33932) Thinkpad X220 Ultrabase Docking Station Thinner and lighter design for easy portability - Ideal for use in the office, at home or on the road 4 x USB 2.0 ports; Digital and analog video support - VGA monitor port and Display Port Ultra bay Slim device bay for optical drive or second hard drive Works with either 65W or 90W adapter (not included) Compatible with: X220, X220t Tablet, X230, X230t Tablet.