- 1900M cdma modem - Download Speed: 3.1Mbps - Feature: SMS,Calling and internet connecting EM520 is 3G Evdo 1900M cdma modem designed to offer high-speed wireless connectivity for Windows notebook and desktop computers on CDMA/EVDO networks. It is easy to use USB connector and the ability to roam globally on EVDO and CDMA networks. It enables connection to internet download speed up to 3.1Mbps. ...