Got it, it's installed, it works.
Interestingly the hard drive seems to have degraded to around 236gbs over the years but let's be honest that's still more then enough to store every wii u game worth owning.
I do like the imagery however of the Wii U being given a 9 year old hard drive and keyboard (which I need to get an extension cable for) given how so many people claim that the Wii U itself runs on 9 year old hardware