The build quality of this hard disk is average and I am Extremely disappointed with this purchase. Purchased the Seagate Backup Plus Slim 2TB Portable External Hard Drive few days ago. When I tried to register the product on the Seagate website, I was informed that the serial number of the product is invalid and hence I am not even able to check the warranty online. Not sure whether the product has any warranty at all! Extremely disappointing.