... /ipad, Smart phone and MID) via USB under the status of ON or C.With protection for over charge , over discharge, short ... Rev A/B including more than 400 kinds of popular USB 3G modemsall over the world, dial automatically without any manual setting ... with all the operating system such Mac, IOS, windows ,Linus, Android.Wi-Fi Hotspot Access And RelayingUnder the Wi-Fi coverage ...