LQM&reg; 20V 3.25A 65W Ac Adapter Battery Charger Power Supply for IBM Lenovo Yoga 13 Yoga 11S Yoga 2 Z505 Z580 K2450 K4450 K4350 K4350A V4400U,Compatible Models: Thinkpad X300S X301S X230S S230U S3 S5 X240 X240S 45N0251