I am Using Sony HD From nearly 3 years.I Bought This Hd Among With my PC. This Is Very Helpful For Me And.Very Good Performance.And Very Speed IN File Transfer.500GB HD. Very Easy To Use. Very Nice Style.Lightweight. And Its Good To Travel Also. But Once I Got A Connecting Problem. Then I gave In Service Center with in 2 Days. Problem Has Been Solved. Very Good Customer Support By Sony. professional Behaviour With Customers. Still I am Using This Sony Hdd.