@strongest_link A couple of things here. External HDDs powered by a single USB are not compatible on Wii U. The USB pots on the Wii U simply do not power enough to use any HDD that doesn't either plug in to a wall or plug in with 2 USB ports so this HDD is incompatible with Wii U. Also, the USBs on the Wii U are 2.0, not 3.0. So the fact that the HDD you've links supports 3.0 has no extra advantages when used on Wii U.