Depending on how old MacOS you're using right now, the main thing is that newer Macs have been reported to not work with Kinect for XBox 360 model 1473. This is a problem that involves the sensor's firmware as well as the changed USB system in MacOS.
I don't recall what the USB bandwidth requirements for Kinect for XBox 360 are, but they are likely at least ~50 Mbit/s. The Kinect v2 bandwidth requirement is about 3 Gbit/s. If you are experiencing USB bandwidth issues with your current setup, you'll definitely be needing some extra gear. We've successfully used PCIE USB3 extension cards, and it might be possible to use Thunderbolt on Mac with an adapter, although I don't recall if this worked for us.