Ok new question...if I have an External Hard Drive for a PS3....can I use the same External Harddrive for a WiiU?
I don't think so. Nintendo is so "exclusive" when it's up to external stuff. Those Wii SD cards needed to me specific ones for the Wii, if you didn't use one that wasn't a Wii one, it wouldn't work. The same thing happens with the PS Vita, you need to use the specific Vita memory cards, that are more expensive, rather than using normal memory sticks.
So the short answer is, I seriously don't think so, but you should give it a try and share what happened.
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