External Hard Drive and USB Hubs

I need some help. I have a 320GB External Hard Drive which uses 2 USB Ports. I also have an external keyboard and mouse, using USB. I first purchased a 'passive' USB hub and the Mac was unable to recognize the External Hard Drive. So, I purchased a USB Hub powered by AC. The External Hard Drive lights up, but the Computer does not recognize it. Is there a recommended USB Hub that will allow the external hard drive to make the hand shake with my MacBook ?

Check with the drive manufacturer to determine if there is an alternative power source for the drive. I've never liked self powered drives and that so many made today require two USB ports is just one of the reasons why.

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