To see details of the available storage space on your console select system settings and then data management from the wii u menu.
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.
You can plug in a full on three terabyte.
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.
However if you want.
Portable external hard drives.
The wii u will in future recognise that you have extra storage space and will install downloading games to the drive by default if you ve already filled the internal space.
To ensure maximum performance between your wii u and an external storage device we recommend using a hard disc drive hdd with a dedicated power source i e using an a c adapter.
Due to the wide range of external storage devices usability and performance will vary.
Your other option is to use a portable external hard drive which normally gets power through its usb cable rather than an ac adapter.
If the wii u has the most recent system update installed it will be able to recognize a storage device of any size but 2tb will be the maximum amount of storage capacity that can be used.
Our complete faq on using external storage with the wii u may also be helpful.