ZYXEL NR5103EV3

Package Contents

• Zyxel Device: A diagram of the Zyxel NR5103EV3 router.
• Power Adapter: A diagram of a power adapter with a plug and cable.
• Ethernet Cable: A diagram of an Ethernet cable.
• Quick Start Guide: A diagram of a folded document.
• Declaration of Conformity Safety Warnings: A document icon labeled "DoC".

Support Information

For technical support, visit: https://www.zyxel.com/service-provider/global/en/tech-support

EU Importer

Zyxel Communications A/S
Gladsaxevej 378, 2. th. 2860 Søborg, Denmark

UK Importer

Zyxel Communications UK Ltd.
2 Old Row Court, Rose Street, Wokingham, RG40 1XZ, United Kingdom (UK)

For configuration assistance and related safety warnings, see the Online Help at: https://zyxelsp.com/NR-Indoor-Series

Copyright © 2025 Zyxel and/or its affiliates. All Rights Reserved.

1 Hardware Installation

Step 1: Prepare the SIM Card Slot

Make sure the Zyxel Device is turned off. On the bottom of the Zyxel Device, open the cover of the micro SIM card slot.

Diagram Description: Shows the bottom of the Zyxel device, indicating a 'Reset' button and a micro SIM slot. An arrow indicates opening the slot cover.

Step 2: Insert SIM Card

Gently push the micro SIM card into the SIM card slot. Put the cover back in place.

Note: If you are using a nano-SIM card, insert it securely into a micro-SIM card adapter to avoid possible damage to your Zyxel Device.

Diagram Description: Illustrates a micro-SIM card being inserted into the micro SIM slot.

Step 3: Connect Power

Select the type of plug used in your country. Use the included power adapter to connect the power plug to an appropriate power source. Press the On/Off button to turn on the Zyxel Device.

Diagram Description: Depicts a power adapter connecting to a power outlet and then to the 'POWER' port on the back of the device. The back of the device shows ports labeled LAN1, LAN2/WAN, USB, and Power. A hand is shown pressing the 'POWER ON' button.

Warning: Avoid contact with liquid; handle with care.

Step 4: Check Power Status

Check that the POWER LED is already on.

Diagram Description: Shows the front of the Zyxel device with the power button illuminated, indicating the device is powered on.

2 Network Connection

5-a Manual Connection (using SSID)

For Notebooks: Use the Wi-Fi Name and Wi-Fi Password found on the device label to connect wirelessly to the Zyxel Device.

For Mobile Devices: Scan the QR code on the device label and connect to the Zyxel Device Wi-Fi network.

Diagram Description: Shows a laptop and a mobile phone. The laptop displays Wi-Fi connection details (Name: XXXXXXXXXX, Password: XXXXXXXXXX). The mobile phone shows a QR code scan leading to Wi-Fi connection.

5-b Automatic Connection (Using WPS)

Press the WPS button until the Wi-Fi LEDs light up.

Diagram Description: Shows a finger pressing a 'WPS' button on the router. The router's Wi-Fi LEDs are shown lighting up. A laptop is depicted connecting via Wi-Fi.

WPS LED Indicator Table

5-c Using Ethernet Cable

Use an Ethernet cable to connect a computer to one yellow LAN port of the Zyxel Device.

Diagram Description: Shows an Ethernet cable connecting a laptop or PC to the router's LAN port.

3 Configuration

6-a & 6-b: Accessing the Device

You can download the Zyxel Air app or use the Web Configurator to manage the Zyxel Device.

For Zyxel Air App: To log in for the first time, scan the Login QR code on the device label or enter the admin Username and Password from the label.

For Web Browser: Open a web browser and go to http://192.168.1.1. Enter the admin Username and Password from the Zyxel Device label, then click Login.

Diagram Description: Shows the Zyxel Air app icon with links to the App Store and Google Play. It also depicts a device label with a QR code and login details (Username: admin, Password: XXXXXXXXXX). A web browser login screen is shown with the IP address 192.168.1.1 and fields for Username and Password.

LEDs

5 LEDs Indicator Table

Troubleshooting

Power and Hardware Connections

• Make sure the SIM card is correctly installed in the Zyxel Device.
• Make sure the power adapter is connected correctly.

Zyxel Device Access and Login

• Make sure you are using the correct IP address. The default IP address is 192.168.1.1.
• If you changed the IP address and have forgotten it, reset the Zyxel Device to factory defaults by pressing the RESET button for more than 5 seconds.
• Make sure your Internet browser does not block pop-up windows and has JavaScript enabled.
• Make sure you enter the username and password correctly. The default username and password are printed on the Zyxel Device label. If they do not work, reset the Zyxel Device to its factory defaults by pressing the RESET button for more than 5 seconds.

Internet Access

• Make sure you insert an 5G/LTE SIM card into the card slot before turning on the Zyxel Device.
• Log into the Web Configurator. Click Wizard, then check the setting in Step 2 Wi-Fi Setup.
• Make sure the 5G/LTE SIM card account is valid and has an active data plan.
• When using a pre-paid SIM card, insert the SIM card on another 5G/LTE device to check if the SIM card still works. If the SIM card works on another 5G/LTE device, contact the vendor. If the SIM card does not work, contact your service provider.

Wi-Fi Connections

• Make sure Wi-Fi is enabled on the Zyxel Device.
• Make sure the wireless adapter (installed on your computer) works.

5G/LTE Connections

• Make sure the SIM card's account is valid and has an active data plan.
• Install external antennas to strengthen the cellular signal.