I wanted something small side (60 GB) swap hard drive in my MacBook and had to learn that this is not so easy. A Samsung is not accepted by the controller (but now works as an external backup disk) a Seagate klackert continues, what is in this seemingly typical plate and with me - after a few months use - lead to irreparable directory structure errors and now the Western Digital: works - Recommendation - in Macbooks, which alone would have been enough to me, but also is still extremely quiet and noticeably accelerated the work on the computer, so a case for 5 star.