M4 Machine to Machine WCDMA LTE 4G Cellular Modem, USB interface

M4 Machine to Machine WCDMA LTE 4G Cellular Modem, USB interface M4 LTE 4g modem adopts industrial grade design, uses metal box. It can be used in the hostile environment -40~ +48. Support TD-SCDMA/EVDO/WCDMA, support FDD-LTE/TDD-LTE...Provide standard USB interface. It integrates all the commonly used protocols from logical link layer to upper application layer protocols, such as TCP/IP/UDP and so on. It provides a secure, high speed, reliable wireless internet connection