for Lenovo Thinkpad Edge E540 E540 Laptop Charger Adapter Power Supply
C 4.0 1.7mm LENOVO, HP, TOSHIBA. G 7.9 5.5mm LENOVO, IBM. L 5.5 2.5mm LENOVO, TOSHIBA, ASUS. U 11 4.6mm (Rectangle USB Type Yellow Tip With Pin Inside) LENOVO. Output Power: 65W(compatible with 45W).