Hi there,
I purchased Nintendo's recommend WD My Book 2.0TB External Hard Drive (WDBFJK0020HBK-NESN) and reach the "USB Device has disconnected" error message.
Here's how I (repeatedly) reach the error code:
* Turn off Wii U
* Plug External Hard Drive into power source
* Plug External Hard Drive into USB port
* Turn on Wii U
* System Settings -> Data Management -> Format
* System Settings -> Data Management -> Hold the "Down" direction and "+" and "-" buttons to disable power management.
* E-Shop and download game.
* Minutes, later, error appears.
I have tried the following, while following the above steps:
* Repeat these systems with power management enabled.
* Try a different USB port.
* Try a different outlet.
* I bought a different hard drive with a "Y" USB plug to power it, and had the same conditions.
I'm running the latest Firmware for the Wii U.
I don't think this is a power management issue because I've tried this with multiple drives. It has to be the Wii U!
Does anyone have any recommendations?