Summary: I bought this for my MacBook Air. It works immediately, it's not the quickest out there (definitely not firewire or thunderbolt... but not as expensive either). I love it for what I wanted it for.
it works - it's simple & it doesn't need external power cables.
D. R. Smith, Amazon
13 October 2012
Summary: After having 2 G-Technology drives dies in the last 2 years I needed a reliable and easy back up. This is it. No fuss no worries, very happy using this with it's FireWire Cable on my MacBook Pro.
Summary: Seagate Backup Plus 500 GB USB 3.0 Portable External Hard Drive STBU500100 (Black) Only problem I had with Backup Plus (on a desktop) was frequent disconnects. I was able to resolve this by adjusting the power options to prevent the PC from going into sleep move -- after doing this, the disconnects stopped.
Summary: Set up was a snap. Back up was simple and fast. The only reason I did not give it a 5 was because the included software does not back up the program files themselves, only the data. Maybe I should have known this, but I didn't. Perhaps different software would solve this.