I have purchased this expansion 2 tb before 2 years. Seagate service is quit good they replaced my hard disk within a week. But bad thing about this hard drive is that it takes external power that is not convenient. I suggest you to good for seagate backup plus 2 tb instead of going this broad big hard disk. After 3 year this hard drive is running good ( after replaced after a year) but I am not comfortable with its size, and external power which is not convenient and sometimes its frastrating by seeing lots of wire. I strongly suggest to put some more money and go for seagate back plus 2 tb.