I have recently tried to install a couple of games onto my 64GB usb stick, and I seem to be running into a unique problem. The storage device I am using is not an HDD, so the lack of power isn't the problem. I have turned off the HDD sleep function, and had no luck. The problem seems to only happen when using the top port on the back of the Wii U. The error appears about 40% of the way of installing a game (SSB4). I have tried using the bottom port on the Wii U and suprisingly it installed without a problem. Does anyone know what is the problem? EDIT: I tried using the USB on the non-working port after installing the games and it can play the games installed from the other port fine. EDIT 2: Seems like it's the same thing with the official data management. USB copying to system memory is fine, but system memory copying back to usb gives me a "disc ejected error" when the progress bar finishes. Bottom port works fine. I'm very confused right now. EDIT 3: Even MORE confused now. Tried a different usb device (SD card + USB Adapter) on the supposedly non working port. No problems with data management transfer and wup installer game install.