Sierra Wireless AirLink GX400 Installation Manual page 6

4. Remove the black cover, exposing the expansion card slot in the middle of the
unit. Make sure the model number on the WiFi upgrade kit cover matches the
model number on the cover you remove.
5. Make sure there are no internal antenna wires which would interfere with the
card sliding in the expansion card slot, if there are, gently move them out of the
way.
6. Slide the WiFi expansion card into the slot with the SMA antenna connector
facing you and on the top of the card. Push in until you feel the electrical bus
contacts making connection on the bottom of the card.
7. Push the black gasket onto the SMA antenna connector until it fits into the
groove behind the threaded portion of the SMA.
8. Install the new black cover by lining up the SMA antenna connector with the
hole in the cover, tilt the rear of the cover slightly to make sure the front bottom
of the cover seats in the front ridge, and then push the top of the cover down.
This requires some force to make sure the 4 holes line up with the threaded holes
on the top of the unit.
9. Re-install the 4 hex screws on top of the unit.
10. Place the lock washer onto the SMA antenna connector and push to the face of
the cover.
11. Install then tighten nut with a 5/16 or 8mm socket torque wrench to a torque spec
of 8in-lbs.
12. Test with a WiFi equipped laptop, scan for WiFi SSID (should default to S/N on
label on bottom of unit).
13. Connect to WiFi SSID, connection to unit should be made with no encryption
and in bridged mode.
14. Test WiFi functionality: Browse to external site when cellular connection is
made to check functionality of card (remember to remove any tethered
connections to unit, including serial, USB, or Ethernet cables before testing).