Thinkpad mini dock series 3 with USB 3.0. Comes with 90w original power adapter.
Used it previously with X series ultrabooks (X220/X230) and T series.
ThinkPad L412, L420, L512, L520
ThinkPad T400s, T410, T410i, T410s, T410si, T420, T420s, T430, T430s, T510, T510i, T520*, T520i*, T530*, T530i*
ThinkPad X220, X220i, X230, X230i
(* dual core models)