I have seen many posts about using a USB hub to plug in multiple drives, but apparently it doesn't work for me. I have 3 16GB drives, 1 4GB, and 1 2GB drive, but no matter the combination, I can only get two to work at once. Is there any way I can use three or more at the same time?
It's limited to 2 devices only.
You can have 2 devices connected to the console at a time, enabling up to 32GB of simultaneous storage.