External 4G Module (Optional)
With an external 4G module (which has USB dongle function as well), you can insert
an SIM card to it, connect it to this product and then successfully connect to 4G
Internet. (External 4G module is sold separately.)
About the installation, you should know:
a. Please use the standard SIM card, make the SIM card metal chip down and insert
it to the SIM card slot.
b. Please upturn the TF card metal contacts and insert it into TF card slot, when hear
a “click” sound indicates the TF card is in place.