On an 80Mbit BT Infinity internet connection I can only get 1.5-2Mbit out of the USB network adapter, on wifi it's about 5-10Mbit. I'm hoping Nintendo have sorted this in the upcoming speedup update.
I use the USB network adapter most of the time, it works best for playing Black Ops online, wifi seems to drop in and out even though the Wii U is only a few metres from the wifi router.
I wish Nintendo had put a gigiabit network port on the Wii U (and an optical audio output), it would have cost pence.
- PS3WIIIUfan likes this