Cisco Meraki MG Cellular Gateways: A Small Business Guide

Why cellular matters for small business

For most Australian small and medium businesses, the internet is no longer a nice-to-have — it runs your EFTPOS terminals, your cloud accounting, your phones and your point-of-sale. When fixed-line broadband drops out, everything stops.

That's where Cisco Meraki MG cellular gateways come in. They turn a 4G LTE or 5G mobile signal into a reliable internet connection your network can use, all managed from the same Meraki dashboard you already know. No on-site networking degree required.

This guide walks through what the MG range does, the difference between failover and primary use, when to choose external-antenna models, and how to pick the right gateway for your coverage, throughput and budget.

What is a Meraki MG cellular gateway?

An MG is a cloud-managed device that takes a SIM card and a mobile signal, then hands out an internet connection over Ethernet — exactly like a wired modem would. Because it's part of the Meraki ecosystem, you provision, monitor and troubleshoot it remotely through the dashboard.

Key things to know:

• It's wireless WAN — the internet comes in over the mobile network instead of a copper or fibre line.
• It pairs neatly with a Meraki MX security appliance for automatic failover.
• It can also run as your primary connection where fixed-line broadband is poor or unavailable.
• Everything is visible in the dashboard: signal strength, data usage, uptime and alerts.

Failover vs primary: which job are you solving?

Before looking at models, decide how you'll use cellular. The two main scenarios call for different priorities.

Automatic failover (paired with a Meraki MX)

This is the most common SMB use case. Your MX uses your fixed-line broadband as the main link, and the moment it fails, traffic automatically switches to the MG's cellular connection. Staff keep working, payments keep processing, and the changeover happens in seconds.

For failover you generally don't need maximum speed — you need reliability and enough throughput to keep essential services running. An entry-level gateway is often perfect here.

Primary connection (no reliable fixed line)

Pop-up shops, rural sites, construction offices, new tenancies waiting on an NBN connection, or premises where the local broadband is simply unreliable — these benefit from cellular as the main internet source.

When cellular is doing all the work, throughput and signal performance matter much more. This is where the higher-end LTE Advanced Pro and 5G models earn their keep.

The current Meraki MG range explained

Meraki's lineup spans simple 4G LTE failover right through to a 5G Standalone flagship. Here's how they stack up.

MG21 — entry 4G LTE for simple failover

The MERAKI MG21 (MG21-HW-WW) is a Cat 6 4G LTE gateway and the natural starting point for most failover deployments. It delivers dependable backup connectivity without the cost of higher-tier hardware.

Choose the MG21 if:

• You mainly want automatic failover behind a Meraki MX.
• Your essential traffic is EFTPOS, email, cloud apps and light browsing.
• You're watching the budget but won't compromise on cloud management.

MG41 — Cat 18 LTE Advanced Pro 4G with more throughput

The MERAKI MG41 (MG41-HW) steps up to Cat 18 LTE Advanced Pro, offering significantly higher 4G throughput. It suits busier sites where failover needs to carry more traffic, or where 4G is your primary link in a good-coverage area.

There's also the MERAKI MG41E (MG41E-HW), which adds support for external antennas — more on that below.

Choose the MG41/MG41E if:

• You want stronger 4G performance than the MG21 provides.
• You have more users or heavier failover requirements.
• You're in a 4G area and want cellular as a capable primary link.

MG51 — Cat 20 5G sub-6 for high performance

The MERAKI MG51 (MG51-HW) brings 5G sub-6 (Cat 20) to the table, delivering the highest performance for sites that need serious wireless WAN throughput. It's an excellent choice where 5G coverage exists and you want fixed-line-class speeds without the fixed line.

The MERAKI MG51E (MG51E-HW) is the external-antenna variant for tougher signal environments.

Choose the MG51/MG51E if:

• You have 5G coverage and want top-tier throughput.
• Cellular is your primary connection for a busy site.
• You need future-ready performance with the flexibility of antenna options.

MG52 — Cat 20 5G Standalone flagship

The MERAKI MG52 (MG52-HW) is the flagship, adding support for 5G Standalone networks. It's the most capable gateway in the range, built for businesses that want the very best cellular performance and the longest runway as 5G Standalone networks mature across Australia.

Choose the MG52 if:

• You want the highest-performing, most future-proof option.
• 5G Standalone matters for your location or roadmap.
• Cellular is mission-critical to your operations.

A quick reminder so there's no confusion: the MG21 and MG41 are 4G LTE, while the MG51 and MG52 are 5G.

When to pick an external-antenna 'E' model

The standard MG models have built-in antennas that work well in most indoor locations. The E variants (MG41E, MG51E) support external antennas, which let you optimise reception when the signal isn't ideal.

Consider an E model when:

• The gateway sits in a basement, metal-clad building or thick-walled space that blocks signal.
• You need to mount the antenna near a window or on the roof to reach the best cell coverage.
• You're at the edge of coverage and every dB of signal counts.
• You want directional antennas to lock onto a specific tower.

If you have strong signal where the device lives, the standard model is usually fine. If you're unsure, our team can help you assess the site before you buy.

How to choose: coverage, throughput and budget

Work through these three questions and the right model usually becomes obvious.

1. Coverage

• Check carrier coverage at the exact site for both 4G and 5G.
• No reliable 5G? An MG21 or MG41 on 4G is the sensible choice.
• Solid 5G? The MG51 or MG52 unlocks far more performance.
• Marginal signal? Lean towards an E model with external antennas.

2. Throughput

• Light failover (payments, email, cloud apps): MG21.
• Heavier failover or many users: MG41.
• Primary connection, high demand: MG51 or MG52.

3. Budget and lifespan

• The MG21 is the most cost-effective entry into cloud-managed failover.
• Spending more on an MG51 or MG52 buys headroom and future-proofing.
• Match the investment to how critical connectivity is to your revenue.

Putting it together

For straightforward backup behind a Meraki MX, the MG21 is hard to beat. Need more 4G grunt? Step up to the MG41, or the MG41E for tricky signal. Where 5G is available and performance is paramount, the MG51/MG51E shines, while the MG52 is the flagship choice for 5G Standalone and the longest future runway.

Not sure which fits your site? The team at TYO Store can help you check coverage, size your throughput needs and choose the right Meraki MG gateway — so your business stays online no matter what your fixed line does.