I use this drive exclusively for Wii U and it filled his role very well. The lack of on / off button is justified for the console as it stops when there is more activity on the USB rather practical when the Wii U looks for updates on standby: the hard disk only lights up during this period where an off button prevent the search update. According CrystalDiskInfo (utility to recover information from hard disk drives in the PC), this hard drive has a rotation speed of 5700 rev / min.
The hard drive aligns very well with the black Wii U aesthetically, the front and the top is shiny black and the unique blue LED is lit like the Wii U.