superchunk on 14 November 2012
"Drives that require more than USB 2.0 connections might not work properly with Wii U. Drives that have two USB connectors will work, however."
That part is not correct. It was in reference to powering the USB drive through the USB only. If you only use one USB then it might not get powered, i.e. work. If you plug it into an outlet it will definitely work with one USB or if the drive is the "Y-Type" and uses two USBs it will definitely work. Can be USB2 or 3.
