So tonight I got my Belkin USB Bluetooth adapter. Last night I had received my Sonnet Tango USB2/FW400 card. But, I could not install the card because my VGA cooler on my 9800 Pro was blocking my last empty slot. Well, tonight I thought, how can I keep my six displays and resolve this? I have another 9800 Pro card that was donated to me, but it was a flashed card and the last time I tried it I didn't know that and so did not tape pins. I put in the fan that I had pulled from my new 9800 Pro, taped the pins and started the QS up. Well, lo and behold the Mac booted, but just like with the FireGL X3 card the Mac did not see this 9800 Pro at all! So now, I am annoyed. I shut down the Mac and pulled out the card. I took the VGA cooler off the new 9800 Pro and put the fan back in BECAUSE this card WORKS in the AGP slot. It was Mac branded for a G4. Somewhere in there I installed the Sonnet card. Booted the Mac back up with six displays and plugged in the Belkin USB adapter. Instant Bluetooth!!!! My QS paired with my Magic Mouse and I am now using it flawlessly! I bought a different USB BT adapter much earlier and had nothing but problems. This Belkin has a range of 100 meters and the connection is solid! So, here I am. Six displays, all slots filled, a Magic Mouse and two more Firewire 400 ports! Hoping harrymatic can figure out the FireGL thing, but until then I'm good!