External USB 2.0 Hard weird problem- HELP

[legaleye2005]

Just upgraded from a macbook to a brand new macbook pro. My USB 2.0 hard drive would work fine on the macbook. Now, on my MBP, I plug it in and nothing shows up on the computer... HOWEVER... If I plug it into my Apple external keyboard, which has 2 USB ports on it, it does work (only USB 1.1 though)...

ANY IDEAS? Thanks!

 

[mad jew]

Do any other USB devices work in the MacBook Pro's ports?

 

[legaleye2005]

Yes... Mouse, keyboard, plugging in my blackberry works...

 

[mad jew]

Is it running off battery power when it doesn't mount? Does the external drive have its own power source? Try plugging the laptop into the wall, unplug all other USB devices and then see if it mounts.

 

[legaleye2005]

It has its own power source and I've unplugged and plugged back in...

 

[mad jew]

Sorry, I was a bit ambiguous. I meant the laptop. Is the laptop plugged into the adaptor? Sometimes laptops don't quite have enough power for the USB because too many devices are plugged in or because power is being used elsewhere. External drives seem to be the first thing to stop working because they can be quite power intensive.