ABLEGRID NEW 24W AC/DC Adapter For WD My Book Studio Edition External Hard Drive WDH1Q15000N WDH1Q20000E WDH1Q20000N WDH1Q5000E WDH1Q6400E WDH1Q7500E WDH1Q10000E WDH1Q15000E WDH1Q5000A WDH1Q6400A Ablegrid Brand Replacement ProductTested Units. In Great Working Condition.Please check your model whether it is the same as the listing shows before purchasing!World Wide Input Voltage 100-240VAC 50/60HzOVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection)