LENOVO ThinkPad W541 20EG Genuine Original AC Power Adapter Charger | eBay
45N0514 170W 20V-8.5A Power Adapter For Lenovo T440P P50 P51 W541 W540 - 365PowerSupply.com - Replacement Laptop Power Adapters,Desktop Power Supply & Server Workstation PSU.
Original AC adapter Charger Lenovo ThinkPad W541 W540 8.5A 20V 170W Power Supply | eBay