The AER1600 Series has a slot for a removable modular MC400. If using the optional additional MC400 modem, it must be installed before the AER1600 Series router can be set up. To install this modem, do the following:
Insert an activated 2FF-sized SIM card into the MC400 modem, metal contacts down, notch end first.
Remove the modem door on the AER1600 Series device.
Slide the MC400 modem into the available modem into the available modem slot, USB plug first, with the Cradlepoint logo facing up.
Replace the MC400 modem door cover.
Note
Remove the plastic SMA covers from the modem door cover of the additional antenna ports on the modem.
Secure the door cover screw (beneath the device).
Note
The modem door cover must be on the router or the embedded modem will not power on.