Lenovo SD20A06041 Type 40A2 Think Pad Ultra Dock (10)
Lenovo Thinkpad Ultra Dock 40A2 SD20A06037 04W3951 DVI USB 3.0 HDMI Laptop Docking Station w/ AC Adapter | Revive IT
SD20A06037 - Lenovo ThinkPad Ultra Dock 40A2 90-Watts 20V 1 x RJ45 / 1 x HDMI / 1 x DVI / 1 x VGA / 3 x USB 2.0 / 3 x USB 3.0 / 2 x DisplayPort Docking Station for X240 / X250 / X260 / X270