Power Adaptor for 500GB LaCie P3 HD USB 2.0 7200RPM...

Hi,

My LaCie 500GB Porsche USB drive stopped being recognized by my Mac. After looking up all the suggested problem and troubleshooting suggestions, it turns out that it was the power adaptor that was the problem. Luckily, I was able to diagnose it using a friend's power adaptor (he has the same exact LaCie).

Now, I'm wondering what model power adaptor I need! There's one for LaCie Porsche but there's also one for Bigger Disk. My LaCie has a 4 pin connector, so it's been suggested that I need the Bigger Disk power adaptor rather than the ones labeled LaCie Porsche power adaptor.

Please advise.

Thanks!
Andrea