This is a wireless communication module, integrated with the M8321 NB-IoT module, which provides TD-LTE / FDD-LTE / WCDMA / TD-SCDMA / GSM / GPRS / EDGE frequency band and LCC + LGA package type. It integrated abundant Internet protocols, standard field interface and functions, supported WindowsXP, Windows7, Windows8, Windows10, Linux and Android USB driver.

In the layout of the LTE-4G module, more hardware resources were added, reserved lanes for speakers, 3 LEDs, USB interface, double antenna allowed.