Lenovo ThinkPad Basic Docking Station incl. 90W Netzteil suitable for ThinkPad X1 Carbon 6th Gen (20KH/20KG) - sparepartworld.com
Amazon.com: Lenovo USA ThinkPad Pro Docking Station (P/N; 40AH0135US) Used In Specific Models Only; P52s, L580, L480, T580, P580p,T480s,T480, X1 Carbon Gen 6, X280 (Renewed) : Electronics
Lenovo ThinkPad X1 Carbon 2nd 3rd Gen OneLink Pro Docking Station DOCK ONLY | eBay
Lenovo ThinkPad X1 Carbon Yoga 12 Yoga 15 OneLink Pro Docking Station No Adapter | eBay
Amazon.com: Lenovo ThinkPad Hybrid USB-C with USB-A Dock US (40AF0135US) : Electronics