Lenovo ThinkPad USB 3.0 Docking Station w/ Power Adapter & SS USB Connection Cable DU9019D1 0A34193 03X6059 - Walmart.com
File:Lenovo x220.jpg - Wikipedia
Lenovo ThinkPad Mini Dock USB 3.0 Docking Station /Compatible systems X220/X230/T420/T430, Computers & Tech, Laptops & Notebooks on Carousell
Lenovo ThinkPad Mini Dock Plus Series 3 with USB 3.0 - Mini-dock - for ThinkPad L412; L420; L430; L512; L520; L530; T420; T43X; T520; T530; W530; X220; X230 at TigerDirect.com