Lenovo (41R4502) – Lenovo 90W Ultraslim AC/DC Combo Adapter

Lenovo (40A20135UK) – ThinkPad Ultra Dock 135W for L440 / L540 / T440 / T440p / T440s / T540p / X240 / W540 (1x VGA port, 1x DVI-D port, 2x DisplayPort, 1x HDMI port (only 2 can be active), 3x USB 2.0 ports, 3x USB 3.0 port, 10/1000 Gigabit Ethernet port, Notebook Lock and Security Lock Slot)