... accept,Quadband 3. 7.2mpbs speed 4. support memory card slot 3g usb modem sd slot H750/OEM accept/7 ... .2mbps/support memory card slotInterface Type: USB (1.0 and 2.0) ... service, Data service, Applications management, Data concurrent, support MicroSD card, etc.Memory: About 30MB Internal Memory available to carriers or ... slot H750/OEM accept/7.2mbps/support memory card slot