After I just recently ran into issues with an external Hard Drive of mine, I thought it'd be good if I made a thread of all the working External Hard Drives that you all have.
the format is simple. State the Type of Hard Drive you have for your WiiU. State the Price of the External Hard Drive you have. State how the drive is powered (AC Powered or Y Cable Powered), Post the Link of where you bought yours from and Post a Picture of the Hard Drive you have if possible
Western Digital 500 GB External Hard Drive
AC Adapter Powered
and hopefully we can help others that are looking for External Hard Drives find the best bang for their buck.