Summary: I bought this to replace the exact same model on a computer that was less than 1 year old. The original was not under warranty as it was purchased in Europe. After installing a new OS and other software, the computer is back online and working well.
Summary: bought it to replace an older WD disk. Does the job, but was a little noisier. At first it was a bit annoying, after a while I got used to it, but still no reason for this. Nothing that would trouble you - but noticeable when using the disk in a very quiet room.