The original dock for Lenovo ThinkPad Mini Dock Series 3 with USB3.0 FRU SD20A23326 04Y2072 Type 4337 W/O adapter|lenovo dock|lenovo thinkpad dockthinkpad dock - AliExpress
Lenovo ThinkPad Type 4337 Mini Dock Series 3 433710U Docking Station w/ USB 3.0 720043527059 | eBay
File:ThinkPad Mini Dock Series 3, Type 4337 - mainboard-0948.jpg - Wikimedia Commons