Lenovo Thinkpad 230W Workstation Dock - 40A50230US (Compatible with P50, P51, P70, P71 Models) - Newegg.com
Amazon.com: Mini DisplayPort to HDMI Adapter for Lenovo P50 Mini DP to HDMI Adapter Compatible with MacBook Air/Pro, Microsoft Surface Pro/Dock, Projector and More 2-Pack : Electronics