
I'll go ahead and answer my own question in case people have the same one in the future. I just got off the phone with Pioneer tech support and the 32GB FAT32 artificial limit that people normally run into when formatting on Windows machines is not a problem. Anything up to 16TB should be supported as long as a third party formatting software is used or, in my case, if it's formatted with Mac OS Disk Utility. Concerning power draw, anything up to 500 mA is supported so as long as your drive doesn't pull more than that it should work.