... , Single-band, double-b 1.USB HSDPA 3G modem, 2.Support 8GB Micro-SD Card, 3.PhoneBook, SMS, Single-band, double-band ... .0 interface connection,To support data transmission with high speed, online voice, phonebook, text messaging, USSD, TF card memory expansion, flow inquires ... Linux(2.6.18 later) Android, MAC(10.5 later) . 3G hsdpa card 7.2M 3G HSDPA USB Modem 3G data card