I think it is very limited keyboard support. My Wii downloaded an update when I powered up my Wii to write the review. I had not powered on my Wii for many months beforehand. After the update and the reboot, I plugged in the same USB keyboard I use with my PS3. Nothing. It wouldn't even let me type in text fields. I think it probably only works with a few specific brands. Not sure why they couldn't write a simple universal driver like SOny did. Lame effort, but then again it is Nintendo... so all of their efforts are lame.