... dual band900/1800MHz 3.Interface:DB 9 pin mc39i modem ,SMS/MMS/GPRS function ,advanced performance Specification : Cinterion GSM/GPRS module ... : UART, RF connector, 40 pin system connector, SIM card interface, Keypad and LCD, etc.Accessorie GSM/GPRS antennas 40 pin ... pictures:OEM serive :The mc39i modem is made from cinterion original modules,Interface was RS232 DB9in ,with EU/AE power supplyLogo ...