IBR600C

STEP 1: Remove the modem door.

Unscrew and unclip to remove the modem door from the router. Note that services will drop until the modem door is secured and closed once again.

STEP 2: Insert an activated SIM card.

Insert an activated 2FF-sized SIM card into the SIM1 or SIM2 slot (contacts down, notch in). The SIM card clicks into place. (SIM1 Slot is the bottom most slot, while SIM2 slot is the top most slot)

Orientation: Gold side down with notch in-line with the Cradlepoint logo.

STEP 3: Secure the modem door.

Place, secure, and screw the modem door back onto the router. This is required for services to restore.

Please follow the associated article here to Understand LEDs on the E300

Understanding Cradlepoint LEDs: IBR600C