I bought an external hard drive Western Digital WD Elements Desktop 3.5 "USB 2.0 to replace a secondary internal hard disk of 500 GB which showed signs of weakness. No regrets. It's a great product, very quiet, fast which does not heat and Western drives have an excellent reputation for reliability. The case is sober, black, unadorned and it's perfect and in my case. Only LED on the back of the drive in connectivity reflects a business. In short, a good quality disc with a capacity of 2TB purchased on Amazon.com.