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Chapter 3: Installation
Auxiliary antenna port
for internal
wireless module
Port for AC power
adapter input
Antenna port
(not used)
Ethernet WAN port (eth 0)
Ethernet LAN ports (eth 1)
Figure 3-2. WRT4000 Series Router back panel, AC power (
WRT4001A–WRT4004A, WRT4011A–WRT4014A)
.
Auxiliary antenna port
for internal
wireless module
DC power connector
Antenna port
(not used)
Ethernet WAN port (eth 0)
Ethernet LAN ports (eth 1)
Port for AC power
adapter input
Figure 3-3. WRT4000 Series Router back panel, DC power and AC power
(WRT4001A-DC–WRT4004A-DC)
.
3.3 Replacing the Subscriber Identity Module
The WRT4000 Series Router holds one wireless card. You will need to put a Subscriber Identity Module (SIM) into place for GSM
cards and LTE cards. (A SIM is sometimes called a GSM or LTE smartcard.)
A GSM cellular wireless module or an LTE cellular wireless module supports a removable SIM to identify the user to the GSM or
LTE network. When you order your WRT4000 Series Router’s wireless card, you specify which carrier and network the card will
use. If you specify a GSM or LTE module, you must order a SIM from the selected GSM or LTE carrier. The carrier provides a SIM
with the carrier’s chip.
NOTE: The WRT4000 Series Router is not a traveling device, so you will not need SIMs for different countries. However, if you
change wireless providers, the WRT4000 Series Router’s GSM or LTE card will need a SIM from the new provider. To install
a new SIM, use the following procedure.
3.4 How to Install or Replace a SIM for a GSM or LTE Module in the WRT4000 Series Router
WARNING: Follow proper procedures and observe all precautions to guard against electrical shock and to protect the device
against electrostatic discharge (ESD) when removing or installing modules in an WRT4000 Series Router device. (For
example, keep the device grounded, wear an ESD wrist-strap, and so forth.) For more information, see the Basic
Safety Guidelines.
Allow only qualified service personnel to install and maintain this equipment.
NOTE: After you replace the SIM, you must activate the SIM’s GSM or LTE card in the carrier network. The former activation of
the card (with its former SIM) is no longer valid.
1. Unplug the WRT4000 Series Router device’s power supply from the power source.
CAUTION: To prevent electrical shock, turn off power to the equipment before disconnecting cables.
2. Disconnect all network connections.
3. Place the chassis on a flat, stable surface.
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