Lenovo ThinkPad 4337 USB 3.0 Docking Station T410 T420 T430 T520 X220 with Keys

ThinkPad T400s, T410, T410i, T410s, T410si, T420, T420s, T430, T430s, T510, T510i, T520 , T520i , T530 , T530i . ThinkPad X220, X220i, X230, X230i. The Lenovo ThinkPad Mini Dock Series 3 (III) contains pass-through and connections for notebook ports including power pass-through.