Mac book Charger Input: AC 100-240V,1.5A 50-60Hz; Output: DC 18.5V-4.6A 85W(Compatible with:60W) ! Note: First Generation of Power Adaptor L-tip.  85W Mac Book Pro Charger with a 6.6FT Original Power Cord
The Compatible Models of the Mac book Pro Power Adaptor A1344，A1330，A1342，A1172，A1181，A1184，A1244，A1278，A1330，MA538LL / A，661-0443、661-4269、661-4485、661-4259、661-4339.The Above Numbers are for 15 and 17 inch MacBook Pro laptops (before 2012).