This thing is more a old piece of memorabilia. I never try to use it. I gess it as at least 15 years old. I don't know how to use it cause anyway i'm pretty sure it dosen't work anymore. For exemple, the model requirements is window XP. If you wonder why i it. that's beacause some people collect old strange device.

MAGIC JACK Magicjack Model #A921 With USB Extension PC . Expédition avec Postes Canada – Poste-lettres.