I purchases 3 hard disk and all is working very nice. I am using segate internal and external hard drive frkm last 18 years. And as a IT guy I can say no comparison of seagate in hard drive technology. And this 1 TB segate plus slip is nice looking and speed as amazing with high amount of data. We can easily store and excess data . Its easy to carry due to its light weight and sl I m size. I can carry it in pocket.