Docking Station Port Replicator IBM Lenovo ThinkPad USB 3.0 X220 x 230 X230i 4251476995727 | eBay
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
Which X220 USB port is the USB 3.0 one? [SOLVED] – Which X220 USB port is the USB 3.0 one? [SOLVED]
IBM Lenovo Port Replicators / Docking Stations - Lenovo ThinkPad Mini Dock Plus Series 3 USB 3.0 Mini-dock 433815U
Lenovo ThinkPad Mini Dock Series 3 with USB 3.0 Type 4337 T410 T420 T510 X220 | eBay
Lenovo ThinkPad Mini Dock Plus Series 3 USB 3.0 Type 4338
Lenovo ThinkPad Port Replicator Series 3 USB 3.0 Type 4336