patible with GPRS/EDGE 800/1900M or 850/1900M networks; CDMA/EVDO 800M/1900M networks. 2.Interface: Standard PCMCIA. 3.The speed is high up from 115.2kbps to 2.5Mbps. 4.Data, voice and SMS group messaging functions. 5.Large capacity phone and telephone conversation record. 6.Supporting SIM/RUIM card groove. 7.Operation system supported: Win98/Win2000/WinXP/vista