Help with IOGear GBU521 USB Bluetooth Dongle not being recognized on 10.8.5

Hey Everyone,

I've just plugged an IOGear GBU521 Dongle into my iMac since it seemed to be a popular Bluetooth 4.0 Dongle for iOS development. However, it does not seem to be recognized as a bluetooth device only as USB. Before I return it, I thought I'd ask here for some help on things I can try to get it working.

I've read this: https://discussions.apple.com/thread/5304985?start=15&tstart=0 . However, none of the tips there seem to be working.

I've attached a screenshot of the info.plist file under System/Library/Extensions/IOBluetoothFamily.kext/Contents/PlugIns/BroadcomBluet oothHostControllerUSBTransport.kext/Contents

As you can see, the idProduct and idVendor that match the device are there under the BroadcomUSBBluetoothHCIController - MediaLink BT4.0 Adapter (even those what is plugged in is an IOGear GBU521). So I thought it would work "out of the box", but it's not. I installed this update: http://support.apple.com/kb/DL1686? and it didn't have any effect.

My last thought is that my iMac(Haswell) doesn't have any USB 2.0 ports...I wouldn't think that would be the issue since USB 3.0 are supposed to be backwards compabitible, but some have suggested that might be the issue. Can anyone shed some light on the situation?

Thanks,

Mike