So, as I theorized, if you put the nifty WiFi AC card in a 1,1 it gives you both WiFi AC and BT 4.0, no need for the USB addition like in a 4,1/5,1 So a 2006 Mac Pro can easily have same WiFi and BT of latest models. When Tiamo gets his Yosemite Boot EFI out they will be Handoff/Continuity capable. Will likely be oldest Macs able to do that. And all thanks to the magic of industry standard (Mini) PCIE slots !!!