I changed my DD WD 500GB to 1000GB this model. In comparison, almost identical dimensions (thicker hair) to 2x more capacity. The 1TB model is a bit more noise than its predecessor write (but that is minimal). (Only problem on my side I was already with my 500GB, the usb3 operates by intermittent. This must be due to a supply problem usb3 port of my laptop ASUS.) Works perfectly in usb2.