i have early 2011 i7 15'' macbook pro. it has 2 usb ports.i installed boot camp (which enables you to run windows on apple machines)

i can use 2 kinects with it. i also have parallels. i can run this bootcamp partition windows while you are on mac os. parallels runs it virtually and adds just one usb controller for these usb ports actually mac hardware has 2 usb controllers.

so i can run dual kinects on mbp :-)

You had more luck that I did, congratulations :)

What PC operating system did you install on your Mac partition? What was your partition disk capacity?....and what version of Ipi software are you running?

i have windows 7 ultimate x64 and the latest ipi. i have 40 gb partition on ssd.