So I just bought a used White Apple Wireless Keyboard off eBay. Get it in the mail today and I've been attempting to pair it to my iMac G4 and MacBook Pro for the last hour. The keyboard is recognized in the setup of both computers, but when I go to enter the 8 digit key to connect it doesn't recognize the keyboard and says the pairing attempt was unsuccessful. Any ideas as to what is going on? I turned off Bluetooth, rebooted the machine, etc. and nothing has worked. The iMac has a Belkin USB Bluetooth dongle running OS X 10.4.11. I have a Mighty Mouse paired to it with no issues whatsoever.