Chapter 1 Introduction
LTE3301-M209 User’s Guide
15
1.7.2 LEDs
SIM Card Slot
The Zyxel Device comes with a built-in 4G LTE module for 4G connections. To set up a 4G connection
using the built-in 4G LTE module, just insert a 4G SIM card into the SIM card slot at the back of the Zyxel
Device.
Note: You must insert the 4G SIM card into the card slot before turning on the Zyxel Device.
Figure 2 Front Panel
The following table describes the LEDs.
Table 1 Front panel LEDs
LED COLOR STATUS DESCRIPTION
Power Green On The Zyxel Device is receiving power and functioning properly.
Blinking The Zyxel Device is in the process of starting up or restoring the
default settings.
Off The Zyxel Device is not receiving power.
Internet Green On The Zyxel Device’s WAN connection is ready.
Blinking The Zyxel Device is sending/receiving data through the WAN.
Off The WAN connection is not ready, or has failed.
LTE Green On The Zyxel Device is registered and successfully connected to a 4G
network.
Blinking
(slow)
The Zyxel Device is registered and successfully connected to a 2G/
3G network.
Blinking
(fast)
The Zyxel Device Series is looking for an available 4G/3G/2G
network.
Off There is no SIM card inserted, the SIM card is invalid, the PIN code is
not correct or there is no service.
Power
LAN
Internet
WLAN/WPS
LTE
LTE Signal
Strength
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