1up répond a quelques questions sur son site a propos de la Clé USB de Nintendo.

How far does the signal reach? Also, Will it be compatable with the Revolution as well? And one more...Does anyone know how much it will cost?

Nintendo says the adapter has a range of up to thirty feet, although real-world experience suggests it's actually better. While sitting all the way across my apartment from the adapter, with a wall and a closed door in between, my signal strength was still two bars out of three and I experienced no lag. As for Revolution compatibility, Nintendo has said nothing... but it doesn't seem unreasonable. The adapter will cost $35, initially available only through Nintendo's website.

Selon les dires de Nintendo, la portée serait de 30 pieds (10 mètres environs), mais selons leurs test (il était assis au bout de son appartement, avec une porte et un mur comme interférence), la portée était donc plus grosse qu'annoncé. Deplus, la connection était toujours a 2 barres sur 3, et il n'y avait aucun lag.

Source : http://www.1up.com