ThinkPad Ultra Dock 90W - Overview and Service Parts - Lenovo Support US
Lenovo ThinkPad Ultra Dock 40A2 for T440 L440 L450 USB 3.0 B dock. Key | Accessories \ Docking stations Laptops \ Accessories and laptop parts \ Docking stations | AMSO
Amazon.com: Lenovo Thinkpad Ultra Dock with 170w Ac Adapter (40A20170US ) - Retail Packaging : Electronics
Amazon.com: Lenovo ThinkPad Ultra Dock 40A20090US : Electronics