d.  Carefully slide the micro SIM card into the slot.
e.  Lock the SIM card door, and close the SIM card cover.
2.  Provide power to the modem.
To provide power to the modem through the power adapter, which 
is required for the LTE Modem 1120 but an option for the 
LTE Modem 1121, do the following:
a.  Connect the power adapter to the modem and plug it into an 
electrical outlet. 
b.  Press the power On/O button on the modem.
c.  Wait for the Power LED   to light green, which might take 
several minutes.
To connect the modem to a router or other device that provides 
Power over Ethernet (PoE), which is an option for the 
LTE Modem 1121 only, do the following:
a.  Connect one end of an Ethernet cable to the Gigabit Ethernet 
port on the modem.
b.  Connect the other end of the Ethernet cable to the Ethernet 
port on the PoE power source equipment (PSE).
c.  Press the power On/O button on the modem.
d.  Wait for the Power LED   to light green, which might take 
several minutes.