---
product_id: 48290023
title: "Netgear LB2120-100EUS 4G LTE Modem"
brand: "netgear"
price: "€ 12.99"
currency: EUR
in_stock: false
reviews_count: 5
url: https://www.desertcart.gr/products/48290023-netgear-lb2120-100eus-4g-lte-modem
store_origin: GR
region: Greece
---

# Optional external antennas for boosted signal 4G LTE/3G fail-safe connectivity Dual Ethernet ports for wired pass-through Netgear LB2120-100EUS 4G LTE Modem

**Brand:** netgear
**Price:** € 12.99
**Availability:** ❌ Out of Stock

## Summary

> 📡 Stay connected, stay ahead — failover that never lets you down!

## Quick Answers

- **What is this?** Netgear LB2120-100EUS 4G LTE Modem by netgear
- **How much does it cost?** € 12.99 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/48290023-netgear-lb2120-100eus-4g-lte-modem)

## Best For

- netgear enthusiasts

## Why This Product

- Trusted netgear brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Lightweight:** Sleek black design at just 181g fits effortlessly into any professional workspace.
- • **Plug & Play Simplicity:** Easy integration with existing equipment and AT&T network-ready for instant setup.
- • **Dual Ethernet Powerhouse:** Two Ethernet ports enable flexible wired connections for your home or office network setup.
- • **Signal Strength on Demand:** Attach optional 4G/3G antennas to maximize reception even in challenging locations.
- • **Uninterrupted Connectivity:** Seamlessly switch to 4G LTE/3G failover when broadband drops, keeping you always online.

## Overview

The Netgear LB2120-100EUS is a compact 4G LTE/3G modem designed for seamless broadband failover with dual Ethernet ports and optional external antennas, ensuring reliable, high-speed connectivity for professional environments.

## Description

Full description not available

## Features

- Simple fail-safe connectivity with 4G LTE/3G
- Connect to existing equipment to support fixed broadband failover
- Dual Ethernet ports for wired connection pass-through
- Optional 4G/3G antennas for better signal reception. Power Adapter : 12V DC, 1A
- AT&T Network-Ready device

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | NETGEAR |
| Product Dimensions | 9.91 x 11.94 x 3.05 cm; 181 g |
| Item model number | LB2120-100EUS |
| Manufacturer | Netgear |
| Colour | Black |
| Connectivity Type | 3G,LTE |
| Number of Ethernet Ports | 2 |
| Voltage | 12 Volts |
| Operating System | Windows |
| Are Batteries Included | No |
| Item Weight | 181 g |
| Guaranteed software updates until | unknown |

## Product Details

- **Brand:** NETGEAR
- **Internet service provider:** AT&T
- **Connectivity technology:** Ethernet
- **Compatible devices:** Personal Computer, Laptop, Router
- **Colour:** Black

## Images

![Netgear LB2120-100EUS 4G LTE Modem - Image 1](https://m.media-amazon.com/images/I/61ltRZAKqyL.jpg)
![Netgear LB2120-100EUS 4G LTE Modem - Image 2](https://m.media-amazon.com/images/I/611MMxmQ3uL.jpg)
![Netgear LB2120-100EUS 4G LTE Modem - Image 3](https://m.media-amazon.com/images/I/51KVhSInuzL.jpg)
![Netgear LB2120-100EUS 4G LTE Modem - Image 4](https://m.media-amazon.com/images/I/51O4SNwDkGL.jpg)
![Netgear LB2120-100EUS 4G LTE Modem - Image 5](https://m.media-amazon.com/images/I/61eW1L4bq8L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Device perfect! Just a few pointers to be aware of in the UK 4G world...
*by M***G on 21 January 2018*

Needed one of these as my office was unable to get any broadband installed for a good 6-7 weeks. (A perfect picture of the UKs communication network in 2017)The modem comes unlocked, so threw a 50GB (£30) / month Vodafone 4G Sim card into it and fired it up. We have the modem providing Internet to a LAN of about 15 devices ranging from 3 - 6 computers, and the rest a mobile devices. The LAN is controlled using PfSense (OPNSense) which this is connected to one of the interfaces. Before I did this I had to ensure the device was in Bridge Mode by connecting a computer straight to it and configure it using the web interface. The web interface is easy, literary a few admin pages, nothing too in depth, a good feature it has is the auto fail over from WAN (Broadband connection) to 4G.I did wonder if I would hit the double NAT issue. All UK mobile network operators issue you with a private IP address. Vodafone so far have given us a 192 and a 10 IP addresses so far. Because of this, internally using PfSense I used one of the reserved 172 IP address ranges on the internal LAN which hasn't caused a conflict with a double NAT as yet.A few other points...- You have an option in the web admin to turn off all the lights if you wish.- Gets a little warm but nothing to worry about.- Web admin shows you SMS messages albeit a limit of around 10.- Comes with 1 Cat 5e yellow cable around 1m long.- Shows data usage from a billing date you set- Had to restart it twice in 4 months, not sure why- The 5 signal bars are consistent with a Mobile phone on the same network- Has an option to plug in an external aerial but doesn't come with one- Has a button switch on the side to turn on / off.- If there is no signal lights, your mobile operator has cut you off (not necessary lack of signal)- Has holes underneath so you can wall mount it.One thing to bare in mind (and I learnt the hard way) with Vodafone they allow you by default to go over your monthly allowance and when you do its pants down time. They charge you over £6 / 250Mb. When you approach your monthly limit they do send you SMS messages to the Sim, however only if you monitor the SMS inbox using the web admin pages and ensure its empty (as it only holds around 10 sms messages) you won't know if you have gone over your limit. We racked up around £200 in 3 hours! Make sure with Vodafone or who ever you use, you are aware of this Christmas bonus generator and when you hit your limit it cuts you off rather than get hit with astronomical charges.Would buy again if in the same situation or required a cheap fail over solution. Excellent work around for our situation.

### ⭐⭐⭐ LB2120 findings
*by R***I on 17 November 2017*

It does were it was designed for. But it laks a) UPNP b) reservered DHCP IP addresses c) USSD messages to update SIM bundles d)It only handles DHCP WAN setup e) Bugs in alert SMS messages f) Does not automatic forwrd WAN adress after failover in bridge mode.The interface is straight forward and easy to use. No difficult settups.

### ⭐⭐⭐⭐⭐ Five Stars
*by N***S on 5 December 2017*

Took this to remote places in India where there is 4g, and I could connect to bbc.co.uk

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.gr/products/48290023-netgear-lb2120-100eus-4g-lte-modem](https://www.desertcart.gr/products/48290023-netgear-lb2120-100eus-4g-lte-modem)

---

*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-05*