Lenovo ThinkPad Pro Dock Tipo 40A1 USB 3.0 DP DVI per X250 W550s T460 SD20F82751
Lenovo ThinkPad Pro Dock Type 40A1 USB 3.0 Displayport DVI for P51s X270 T450 T460 W550s 04W3952 SD20A06042. The Lenovo ThinkPad Pro Dock (Type 40A1) contains basic pass-through connections for notebook ports, including power pass-through.