I usually buy the Western Digital My Passport Essentials for Wii’s to load off USB. Recently WD has switched to USB 3.0 with “100% USB 2.0 Compatibility”. While that might be true for PCs, not so much for Wii’s. I’ve tried three of the new USB 3.0 drives on different Wii’s and they don’t care for them one bit. I would venture to guess that any/all future USB 3.0 devices will fall into the same realm. On a side note, another interesting fact I discovered about USB 3.0 devices on a computer is that you cannot have more than one of the SAME USB 3.0 device on a USB 2.0 controller. It has something with the way it’s setting up the compatibility that the PC sees the drives as the exact same drive, which cancels each other out (very odd problem indeed). Unfortunately I don’t have a USB 3.0 board/controller to see if this is purely a USB 2.0 only problem or not.