3.5G wireless USB 7.2Mbps HSDPA modem 7.2Mbps HSDPA ModemSupport HSDPA / UMTS 850 / 1900 / 2100MHz,GSM / GPRS / ... / 1800 / 1900MHzUSB slotSMS MessageData serviceT-Flash CardData transmission up to 7.2Mbps (HSDPA)Data transmission up to 384Kbps (UMTS)Data transmission ... peak, 10~500HzOperating systemsWindows® 2000, Windows® XP, Windows® Vista,UBUNTU 8.04,mac os x 10.4 Mechanical:Dimension: 87.9(L ...