I have a DLink Bluetooth dongle that I previously used on my PowerMac without any problems. Literally plug it in and go. I brought it to work to connect to my WindowsXP PC so I can sync my Smartphone and what a MONUMENTAL headache it was to get working. In fact, it never did work. I ended up buying another brand and even that took an hour to get working properly. I had forgotten how painless everything is on Mac and started taking it for granted.