Your other option is to use a portable external hard drive which normally gets power through its usb cable rather than an ac adapter.
Can you buy more storage for wii u.
That s not a big deal and if you already have a portable external you d like to use buying the y cable is going to be cheaper than buying.
In the wii u s case it means you re going to need to purchase a y cable plug the single end into the external and both of the other ends into the two usb ports on the wii u.
Our complete faq on using external storage with the wii u may also be helpful.
However if you want.
To see details of the available storage space on your console select system settings and then data management from the wii u menu.
The wii u premium pack has approximately 25gb available for data storage and downloads.
Portable external hard drives.
You can plug in a full on three terabyte.
Due to the wide range of external storage devices usability and performance will vary.
The nintendo wii u may only have 8 to 32gb of internal memory but the company s taking a decidedly open approach to expanding that memory.
The wii u basic pack has approximately 3gb available for data storage and downloads.