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Meraki MG51 5G LTE (cellular) Gateway

Genuine Cisco Meraki Product

5G Cellular Modem with Integrated Antennas and Dual SIM slots

From: £445.45 +VAT (£534.54 incl. VAT)

Meraki MG51 License



A license is required for the MG51/E Cellular Gateway

The license permits the product to function, connect to the Dashboard, gives support and warranty.


Cisco Meraki 12V AC Adapter – optional


Cisco Meraki 12V AC Adapter


Meraki MR 802.3at PoE Injector (No Plug) – optional


30W PoE Injector
Compatible with 10/100/1000 Mbit/s Ethernet, full duplex.

You will need a mains cable.


Dual SIM Cloud Managed 5G Cellular Gateway

Connectivity is critical for any organization that depends on reliable internet access in order to function. Wireless WAN connectivity options, such as cellular networks used to serve as a reliable backup internet uplink in the event of a primary uplink failure. However, with 5G providing wired like speeds, MG51 provides an alternative to wired connection, providing same day connectivity and simpler management via the Meraki dashboard.

The MG51 cellular gateway simplifies the path to wireless WAN connectivity over 5G and makes cellular a viable primary uplink option for many networks bypassing the necessity for wired circuits. The MG51 acts as a gateway to the internet cellular networks by converting 5G and LTE signal from a cellular provider to an Ethernet handoff, which can be used as an internet uplink for a variety of use-cases. 

MG51 can work with any routing or switching device, Meraki or non-Meraki. With additional 802.3at compatibility, the MG can be placed anywhere and powered via power over ethernet (PoE) like any access point. This gives users the option for optimal physical placement for signal quality  – a cornerstone for wireless WAN communications.

  • Built in 5G Sub 6GHz with CAT20 LTE failover connectivity
  • Dual SIM support
  • Supports 2 separate downstream router connections
  • Small form factor
  • PoE+ or DC powered
  • IP67 rating
  • Optional Patch antenna
  • Sleek, low profile form factor
  • x1 CAT 20 cellular modem – up to 2 Gbps/300Mbps
  • x2 nano SIM card slot
  • x2 GbE ports
  • Multi-surface mounting bracket for attachment to walls, ceilings, or poles
  • IP67 rated for environments of all types
  • 12V DC or PoE
Use cases
  • Primary cellular connectivity
  • Failover cellular connectivity
Cloud-based centralized management
  • Managed centrally over the web
  • Zero-touch, self-provisioning deployments
  • Remote troubleshooting tools
  • Secure, user-scheduled firmware updates
  • Remote visibility of key cellular information: IMEI, ICCID, APN, RSRP, RSRQ
Cloud APIs
    • All MG configuration settings executable via APIs

Additional information

Wireless Antennas

Meraki MG51 License

Licence length

1yr, 3yr, 5yr, 7yr, 10yr, No License Ordered, 1day (for per-device licensing model only)

Cisco Meraki 12V AC Adapter

Country for plug


Meraki MR 802.3at PoE Injector (No Plug)

Power Over Ethernet Supplied


    • 2 Gbps CAT 20 LTE integrated modem
    • LAN Interfaces – 2x 2.5 GbE
    • WAN Interfaces – 1 * 5G NSA Sub6 CAT20 LTE Cellular modem
    • SIM Card Slot – 2x Nano (4FF)
Monitoring and Reporting
    • Throughput, connectivity monitoring
    • Org-level change logs for compliance and change management
Environmental Specifications
    • Power: 12V/1A, 48-57V DC/0.35A
    • Power Load 16 Watt Maximum (PoE 802.3at)
    • Operating temperature: -40°F to 122°F (-40°C to 50°C)
    • Humidity: 5 to 95% non-condensing
    • IP67 environmental rating
    • Desktop or wall mount or ceiling mount(all standard mounting hardware included)
Remote Diagnostics
    • Email, SMS and Mobile push notification alerts
    • Ping, traceroute, cable testing, and link failure detection with alerting
    • Remote packet capture
    • Combined event and configuration change logs with instant search
    • DM logging via Local Status Page
    • Manageability from the Cisco Meraki dashboard
    • Self-configuring Cellular Gateway
    • Automatic firmware upgrades with scheduling control
    • Extensive API support
Integrated Cellular
  • 5G Category: 5G NSA Sub 6GHz
  • 2 Gbps/300 Mbps CAT 20 LTE
  • Additional regulatory information: PTCRB (US), RCM (ANZ, APAC), GCF (EU)
Supported UICC/SIM
  • 2 * internal SIM card
  • FCC (US)
  • PTCRB (North America)
  • RCM (Australia/New Zealand, Asia Pacific)
  • GCF (EU)
  • IC (CH)
  • Full lifetime hardware warranty with next-day advanced replacement included.


  • Dimensions (w x d x h): 173 x 173 x 36.5mm
  • Weight(without accessories) 560g

Use Cases

Note that the following use-cases refer to using a Meraki MX appliance with the MG51 as a WAN uplink. However, the use-cases can also apply to non-Meraki devices.

  • Antenna placement where cellular coverage is best 

    • Signal strength is key for cellular performance. The MG51 makes cellular a viable option in situations where high bandwidth or throughput is needed or locations where the MX is not necessarily the best location for a strong cellular signal . The separation of cellular antenna and MX expands cellular options for all networks, particularly for mid-range MXs mounted in a data center. The 4 x 4 DL MIMO is capable of supporting deployments that demands higher throughput capacity.

  • Primary WAN

    • In areas where wired internet services are not available or wired connectivity takes too long or expensive, the MG51 provides a simple, viable option for wireless WAN connectivity.

  • Secondary WAN for Failover

    • An MX’s primary or secondary WAN interface connected to an MG51 may use the cellular network for both primary and secondary uplinks

  • Primary/Secondary WAN for SD-WAN

    • An MX with an MG51 as a primary and/or secondary WAN uplink may use the cellular network to establish VPNs for SD-WAN.

  • High Availability Uplink

    • The MG51 can be used as either a primary or secondary internet uplink for MX HA topologies. Its two LAN ports allow the MXs to share access to the same cellular network.

What do I need?

You need a SIM card (or 2 to connect to an alternative carrier) with data for your region and you need to power the MG51 via PoE or local 12V adapter.

The output is an unfiltered internet feed on 1GbE ethernet cable. Plug this into the WAN port of your firewall.

The SIM card and contract are not provided.

Choosing between the MG51 and MG51E and the antennas

If you are technical, you can look at the antenna datasheets on the pages of this site.

However, in our opinion the choice is probably going to be down to how good your cellular signal strength is where you intend to mount or install your MG51/E. Remember you can mount either outside. Just think about how you are going to get the ethernet cable to it and provide the necessary power via PoE.

If the signal/s is/are good, then just get the MG51. It has excellent internal antennas that should cope well in most situations.

If the signal is not-so-good, opt for the MG51E. It comes with two external dipole (stick-like) antennas that you can angle to get the best of the signal available. If after you have tried that it doesn’t work so well, and you have sited it in the best place you can, then you can buy the patch antenna and plug it in instead of the dipoles. The patch antenna is a directional antenna designed to point towards the local cell tower to make the most of the signal available.

If the cellular signal is awful opt for the MG51E and go straight for the patch antenna, or two of them optimised for your two SIMs. Mount them outside. The patch antenna is a directional antenna designed to point towards the local cell tower(s) to make the most of the signal(s) available.

MG51E: Non-Meraki Antenna not supported

Note: Non-Meraki antennas are not supported. The socket is a reversed RP-SMA that is designed to detect the official MG smart dipole antennas and smart patch antenna. Usage of non-Meraki accessories may damage the MG and degrade performance. The Cisco Meraki antennas are designed for the maximum allowable gain without exceeding the EIRP for local regulatory domains on their supported bands.

MG21 vs MG41 vs MG51

Physical Specifications (MG51 vs MG41 vs MG21)

Models  MG21/E MG41/E MG51/E
Dimensions (w x d x h) 160.45 x 160.45 x 34.45mm 168 x 168 x 35mm 173 x 173 x 36.5mm
Weight (without accessories) 489/497g 670g 560g/717g
PoE Ports 1 2 2
External Antennas 2 4 4
Patch Antennas 1 2 2
Product Category CAT6 4G CAT18 4G 5G 6 Sub 6GHz NSA + LTE CAT20
Maximum Wireless Data Rate (Down/Up) 300 Mbps / 50 Mbps 1.2 Gbps / 150 Mbps 2 Gbps / 300 Mbps
LAN Interfaces - Dedicated 1x Dedicated GbE RJ45 1x Dedicated GbE RJ45 1x Dedicated GbE RJ45
LAN Interfaces - Convertible 1x Convertible LAN/WAN GbE RJ45 1x Convertible LAN/WAN GbE RJ45 1x Convertible LAN/WAN GbE RJ45
SIM Slots 1 2 2
Water and Dust Resistance IP67
Carrier Aggregation DL - 2CA DL - 5CA, UL - 2CA DL - 7CA, UL - 2CA
Power Options 12V DC (AC adapter) or PoE


Feature Specifications (MG41 vs MG21)

Models  MG21/E MG41/E MG51/E
Auto SIM failover No Yes Yes
Dual SIM Info No Yes Yes
Custom APN configuration via dashboard No Yes Yes
Carrier Aggregation info on dashboard No No (LTE only) Yes
Troubleshooting tools (DM logging) on LSP No Yes Yes
SIM switch via Dashboard/LSP No Yes Yes
Band 66, 71 No Yes Yes + 48
Private LTE (CBRS) No Yes Yes
FirstNet band 14 No Yes Yes

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