Product Description Keep a spare 230W AC Adapter to hand to ensure your has a consistent flow of power. Keep one in the office, one at home and another in your carrying case for immediate, convenient access to power. This AC adapter is perfect for use as a spare or replacement adapter for compatible laptops. It is compatible with all laptops with the rectangular “slim-tip” common power plug. It is not compatible with legacy notebook systems with the round, barrel-type power plug. AC adapters are compact so you can easily keep a spare tucked into your carrying case at all times. Compatible With: T431s,T440,T440p,T440s,T450,T450s,T460,T460p,T460s,T470,T470p,T540p,T550,T560,T570,TP25.a Compatible With; W550s, X1 Carbon (2nd Gen), X1 Carbon (3rd Gen) , X1 Carbon (4th Gen) , X1 Yoga (1st Gen) , X240,X240s ,X250,X260,P40 Yoga,P50,P50s,P51,P51s,P70,P71. Compatibility With; E440,E450,E455,E460,E465,E470,E475,E540,E550,E550c,E555,E560,E560p,E565,E570,E570p,E575,S1 Yoga 12, S3 Yoga 14,S5 Yoga 15,Yoga 14,Yoga 260,Yoga 460,L440,L450,L460,L540,L560,L570.