Lenovo ThinkPad OneLink Dock DU9026S1 docking station with HDMI p/n 03X6894 Docking station suitable for: ThinkPad Yoga 12, ThinkPad Yoga 15, ThinkPad Yoga 14 (Type 20DM, 20DN) (All) ThinkPad S540, S440, S431, S531 (All) ThinkPad E431, E540, E440, E531 (All) ThinkPad X1 Carbon 20A7, 20A8, 20BS, 20BT Connections front: 2x USB 3.0, audio 3.5mm jack Rear: 2x USB 2.0, LAN, HDM