Dock 04W6846 for Lenovo Thinkpad (see description)
Amazon.com: Lenovo ThinkPad X230, Intel Core I5 Upto 3.3GHz, 8G DDR3, 512G SSD, Mini DP, VGA, USB 3.0, WiFi, 12.5 inch Screen, Windows 10 64 Bit-Multi-Language(CI5)(Renewed) : Electronics
My portable X230 gaming rig : r/thinkpad
ThinkPad X series - Wikipedia
For Lenovo Thinkpad X230 6FT/1.8M Mini DP Display Port Thunderbolt to – Hellfire Trading
Mini DisplayPort to HDMI Adapter for Lenovo X230 Mini DP to HDMI Adapter Compatible with MacBook Air/Pro, Microsoft Surface Pro/Dock, Projector and More 2-Pack - Walmart.com
Lenovo ThinkPad 40A2 Ultra Docking Station Port Replicator USB 3.0 HDMI Desktop! – ASA College: Florida
For Lenovo Thinkpad X230 10FT/3M Mini DP Display Port Thunderbolt to HDMI Cable | Fruugo US
ThinkPad X230
Amazon.com: Mini DisplayPort to HDMI Adapter for Lenovo X230 Mini DP to HDMI Adapter Compatible with MacBook Air/Pro, Microsoft Surface Pro/Dock, Projector and More 1-Pack : Electronics