DTK 20V 2.25A 45W Laptop Charger for LENOVO thinkpad Notebook Computer PC Power Cord Supply Lead AC Adapter Flex Yoga IdeaPad series Connector:11.0 x 5.0mm: Amazon.co.uk: Computers & Accessories
Lenovo ThinkPad Ultrabook adapter charger power supply 20V 11 x 4.6 mm | Pcdirectuk.com