COOLEAD 85W L-style Connector AC Wall Power Adapter Supply Charger for Apple MacBook Pro 15" 17"inch [until Summer 2012 Models] 85W L-shape AC Power Supply Adapter Charger for MacBook Pro MagSafe 15" 17"[until Summer 2012 Models] Input: AC 100-240V 50-60Hz Output: 18.5V 4.6A 85W This is not an original apple product, just a replacement item Old version or New version ,they are not interchangeable,please mind what you are ordering