mc39i modem 1.Configuration:Magnet antenna+rs232 cable+power adapter. 2.Frequency:dual band900/1800MHz 3.Interface:DB ... : non transparent, CSD up to 14.4kbps, USSD, Interfaces: UART, RF connector, 40 pin system connector, SIM card interface, Keypad and ... connector SIM card holder U.FL to SMA RF cable MC39I modem simplfied info: Module cinterion MC39i FrequencyGSM 900/1800MHz ...