This is a Magsafe1 adapter、 it is only compatible with the MacBook and MacBook Pro sold from June 2012 and BeforeFeatures:- Double chipset innovation provides constant true voltage automatically with low consumption.- Built with input/output overvoltage protection、 input/output overcurrent protection、 over temperatureprotection、 over power protection and short circuit protection.Specification:Product name↔o AC adapter For MacbookPower↔o60WInput↔oAC 100~240V 1.5A (50~60Hz)Output↔o16.5V / 3.5ATip Size↔o5PIN MagSafe1 L-TipFit for Brand↔oFor AppleDimension ↔o74*74*28mm(L*W*H)Net Weight↔o210GLength of output power cord↔o120cmPacking↔o1xpower adapter with US Plug +Regular Paper box+Bubble bag