I tested and working fine !. Now I can send to my son and he can connect internet really good in our contry !. I no need in U.S.A. , but , in our country it's imposible with the internet normal or WiFi ,but, whit this modem it's a good solution when connection NOT is really good !. Anyway, I'm very very satisfaced whith quality. I received very very fast . Thanks a lot for all !!!.