a couple days ago i hooked up my wiiU to a wired connection with my official ninty lan adaptor....i was hoping download speeds would improve...
but guess what? it's slower. i was trying to re-download tekken today (15GB)....wired connection was slow as hell 1% every 10 min then after awhile 3% in 1 hour!
so i went back to wifi....and bam...% started moving much faster.
maybe that's why there is no ethernet port....it was made for wifi.