Amazon.com: IBM Lenovo ThinkPad Mini Dock Series 3 4337 433710U Docking Station L412, L512, L420, L520 T400s, T410, T410i, T410s, T410si, T420, T420s, T510, T510i T520 X220 With KEY : Electronics
IBM Lenovo ThinkPad X230i Docking Station Port Replicator USB 3.0 & Keys | eBay
Dock Port Replicator For Lenovo T410 T420 T430s T520 X220 X2304337 3.0 Docking Station With 2key Refurbished - Cases - AliExpress
Lenovo ThinkPad Mini Dock Series 3 - Mini Dock 4337 Compatible with L412, L420, L512, L520, T400s, T410, T410i, T410s, T410si, T420, T420s, T510, T510i, T520 and X220 : Amazon.com.be: Electronics
Docking station Lenovo ThinkPad Mini Dock Series 3 | ECOPC