Ok I have a 500gb hdd that's inside a NexStar CX usb hdd case (it comes with it's own power supply) when I was using this for the Wii U I was able to play the wii u mario bros. from the hdd no problem. Now I would like to use this hdd for vWii. At 1st I was using the 32 gb sd card and was playing from that no problem.... so i reformat the 500gb and then transfer everything that was on the sd to the hdd but when I started the vwii plug in the usb hdd (upper back slot) and then powered it on I don't see non of the apps or can play any of my backups. My question is even though my hdd case has its own power supply is it possible that I would still need to purchase a Y-usb cable just for the vwii can pick up on my hdd?? or do I just have to set the hdd a certain way just so I can play backups? Thanks in advance.