Installing Sim Card(S) - D-Link DWM-312 Quick Installation Manual

Observe the following precautions to help
prevent shutdowns, equipment failures, and
personal injury:
• Install the DWM-312 in a cool and dry place.
Refer to the technical specifications in the
user manual for the acceptable operating
temperature and humidity ranges.
• Install the router in a site free from strong
electromagnetic sources, vibration, dust,
excessive moisture, and direct sunlight.
• Place antennas in an unobstructed area
with clear mobile signal. Avoid metal boxes,
brick walls, and other dense materials. It is
recommended to use the web interface to
confirm signal strength before permanent
installation.
• Visually inspect the power connector and
make sure that it is fully secure.
• Do not stack any devices on top of the router.

Installing SIM card(s)

The DWM-312 is equipped with dual-SIM
slots. At least one active SIM card with Internet
access is required for proper operation.
1. Unscrew two screws to remove the security
plate and get access to SIM card slots
2. Insert a micro-SIM card into the slot labelled
SIM A with the contacts facing down. If you
wish to install a second SIM card, insert it
into the slot labelled SIM B.
4
Figure 4: Installing a micro-SIM card
1. Gently press the micro-SIM into the slot until
it locks into place. To remove, press again and
the SIM card will be ejected.
2. Screw the security plate back on using the
two screws removed earlier in order to
protect the SIM card slots.
Note: SIM behavior must be configured from
the web UI before an Internet connection can
be established.
Attach the External Antennas
Figure 5: Attaching External Antennas
The DWM-312 requires two external antennas
to function correctly. The included antennas are
interchangeable, but third party antennas may
require connection to specific ports.
1. Attach the antennas to the SMA connectors
on the back of the router to the ports labelled
"Main" and "Aux. " Turn clockwise to fasten the
antenna.
2. Place antennas where they will receive
optimal signal. Arrange them so they point
upward.
DWM-312