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TP-Link TL-MR3420 300Mbps 3G/4G Wireless N Router

by TP-Link
4.3 out of 5 stars  See all reviews (317 customer reviews)

RRP: 42.92
Price: 26.98 & FREE Delivery in the UK. Details
You Save: 15.94 (37%)
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Dispatched from and sold by Amazon. Gift-wrap available.
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  • Blazing 4G speeds and backward compatible with 3G modems
  • 3G/4G and WAN failover guarantees an ‘always-online’ Internet connection
  • Wireless N speed up to 300Mbps for a robust Wi-Fi network
  • Supports PPPoE, Dynamic IP, Static IP, PPTP, L2TP Cable Internet Access
  • Supports 64/128-bit WEP, WPA/WPA2 and WPA-PSK/WPA2-PSK encryption
See more product details
Router Buying Guide
Looking for a router but not sure which one is right for you? Check out our Router Buying Guide to help you make the right choice.

Frequently Bought Together

TP-Link TL-MR3420 300Mbps 3G/4G Wireless N Router + TP-Link MA260 3G HSPA+ Wireless USB Dongle
Buy the selected items together

Product Information

Technical Details
Item Weight272 g
Product Dimensions20.4 x 13.8 x 4.4 cm
Item model numberTL-MR3420
Wireless Type802.11bgn
Additional Information
Best Sellers Rank 1,351 in Computers & Accessories (See top 100)
Shipping Weight821 g
Date First Available18 Sep 2010

Product Description

Product Description

What This Product Does

Share the freedom of 3G/4G! The TL-MR3420 3G/4G Wireless N Router allows users to share a 3G/4G mobile broadband connection with family and friends via wired or wireless connections. By connecting a 3G/4G USB modem to the routers, a Wi-Fi hotspot is instantly established, via which multiple devices can access the Internet and share data and applications wirelessly.


∙ Compatible with LTE/HSPA+/HSUPA/HSDPA/UMTS/EVDO USB modems, tested in the field

∙ 3G/4G and WAN connection Backup guarantees an "Always-online" Internet connection

∙ Local wireless HD video sharing, with speeds up to 300Mbps

∙ Easy one-touch wireless security encryption with the WPS button

∙ Bandwidth control allows administrators to determine how much bandwidth is allotted to each PC

Enjoy 3G/4G Wireless Sharing

TL-MR3420 features blazing 4G speeds and backward compatible with 3G modems, allowing users to share a 3G/4G mobile broadband with family and friends via wired or wireless connection.

Tests in the Field-High Compatibility

Compatibility is the most important aspect to consider when you're selecting a 3G/4G router. To ensure the best compatibility between our routers and the modem you would use with the router, TP-LINK has made certain that our 3G/4G Routers are compatible with the ISPs in the regions in which they are sold. We have teams around the globe continually testing our Routers with newly emerged modems to ensure that end users can feel confident that their routers will operate flawlessly where they live and work.

Comprehensive 3G/4G and WAN Connection Backup Strategy

The TL-MR3420 stands out with its 3G/ 4G and WAN connection back-up, which keeps users online when one connection fails. TP-LINK's 3G/4G Router provides users with both 3G/4G Preferred and WAN Preferred back-up modes, while other brands provide one or the other. This brings users a high degree of flexibility when users are setting up the networks with considering connection costs and length of downtime.

Wireless N Speed & Range

Complying with the IEEE 802.11n standard, the TL-MR3420 can establish a wireless network with transmission speeds of up to 300Mbps, while mitigating data loss over long distances and through obstacles in a small office or a large apartment, even in a steel-and-concrete building. Above all, users can easily pick up their wireless network's signal at longer distances from the router, where with legacy 11g products they would have to be much closer.

WPA / WPA2 Encryptions -Advanced Security

In order to safeguard user‘s Wi-Fi networks, WEP encryption is no longer strong enough. The TL-MR3420 provides WPA/WPA2 encryptions (Both Personal and Enterprise),created by the WI-FI Alliance, promoting interpretabilities and security for WLAN, to protect against almost any threat that the Internet or intruders may harbor.


∙ Wireless security encryption easily at the push of the WPS button

∙ WDS wireless bridge provides seamless bridging to expand your wireless network

∙ IP based bandwidth control allows administrators to determine how much bandwidth is allotted to each PC

∙ Parental Control allows parents or administrators to establish restricted access policies for children or staff

Box Contains

  • 3G/4G Wireless N Router TL-MR3420
  • 2 Antennas
  • Power supply unit
  • Ethernet Cable
  • Resource CD
  • Quick Installation Guide

  • Customer Questions & Answers

    Customer Reviews

    Most Helpful Customer Reviews
    51 of 54 people found the following review helpful
    By bob
    Style Name:300M 3G/4G Wireless Router|Verified Purchase
    After some initial confusion about firmware updates I was very impressed with this router. I would have rated 5/5 if it wasn't for the firmware issue as it's not mentioned in the manual.

    Vote useful if you need a firmware installation guide, I have included below.

    Compatibility - Purchased a 3 network (using in the UK) Huawei e353 dongle and it worked straight out of the box with no firmware updates. Had an old e1550 dongle by Huawei that I couldn't get to work, even though was stated on the TP-Link website that it was supported.

    Signal Strength - I love in a large old 3 bed flat with solid brick walls between every room and I get full signal on my mac, and cheap 100 tablet in every room.

    THERE IS NO INSTRUCTIONS on how to do a firmware update. So, for those people who have dongles that should be compatible with this device and cannot figure this out, here's how:

    Download the latest firmware from the TP-Link site.

    Save it to desktop for ease of access or wherever you please.

    Plug in the router and connect to you're PC/Mac via the ethernet cable as described in the user manual.

    Type the TP-Link IP address ( is default) and enter you're user/account name and password (admin, admin is default).

    Look down the left hand side menu and select 'System Tools'.

    In this drop down menu select 'Firmware Upgrade'.

    Copy and paste the location of the firmware upgrade you downloaded or select browse and locate the file that way.

    Click upgrade.


    Hope this helps someone.
    Was this review helpful to you?
    6 of 6 people found the following review helpful
    5.0 out of 5 stars Bought to use with Huawei E3256 dongle 14 April 2013
    Style Name:300M 3G/4G Wireless Router|Verified Purchase
    Bought this to replace the previous Version 1 MR3420 as the old version does not work with the new DC-HSDPA+ Huawei E3256 dongle from '3'. There seems to be a lot of confusion with listings as to whether the actual product received will be Version 1 or Version 2. TP-Link Support put me on to this exact listing and it is indeed the version 2. I should add that TP_Link support were very quick to answer my email queries.
    A small problem I found which may help others is that the newer Huawei E3256 dongle is very reluctant to work when used with a 5m extension (as per my old set-up) and I managed to get this working by adding a ferrite core choke to the extension. There are no such problems when using my old Huawei E323 dongle. My internet speed with the new dongle has now doubled and is consistently around 6MB (yes appalling but I am only on one bar in a very rural location).
    Very much recommended. Dual-band would have been nice but this is such a good price.
    Was this review helpful to you?
    6 of 6 people found the following review helpful
    5.0 out of 5 stars Compatiblitly, Compatiblitly, Compatiblitly 20 May 2012
    Style Name:Portable 3G/4G 150M Router|Verified Purchase
    We live in a remote place with terrible mobile and broadband coverage, also frequent powercuts which leave us with no way of contacting help. I hoped that buying this, I would at least have a connection to the internet via it and our netbook. I had a 3G dongle which was on the approved list for this router but the ISP (3) does not cover our location so I had the dongle unlocked and put in a Giffgaff sim which does cover us, what could go wrong? Well just about everything. Suddenly the dongle is no longer recognised. It appears it is only recognised when a 3 sim is in it which is useless to me. I do have one glimmer of hope, an O2 dongle which I'm told will work and I will see if it does.

    Featurewise, this tiny box, 3" square has more features than some standalone routers costing 4 times the price. Other than the 3G, which I cannot use yet, it is an amazing piece of technology and the reason I still give it 5 stars. Used as an access point (AP) it is incredibly easy to use, just plug it into your router or network socket, set the switch to AP and you have wireless access with full WPA2 security. It comes with a power supply, mine was a european 2 pin jobbie so requires an adapter but units delivered from the UK will have UK PSU's I'm informed. I really am very inpressed with this little device, there is even an online community devoted to reprogramming it to do all sorts of other things and if my O2 dongle shennanigins don't pan out, I may have a look into doing just that.

    So, CHECK YOUR DONGLE IS ON THE COMPATIBILTY LIST before buying, not ony the dongle model but the ISP (O2, 3, Voda) must match too and hopefully you will not be dissapointed.

    Edit: Since writing the above, I've discovered that this router is very sensitive to which power supply you use.
    Read more ›
    Was this review helpful to you?
    24 of 27 people found the following review helpful
    5.0 out of 5 stars TP-LINK - Great little product and great price 24 Jan 2012
    Style Name:Portable 3G/4G 150M Router
    This TP-LINK Router is a great little product, looks and feels a lot more expensive too. I've set up my office in garage at the rear of my house which yet doesn't have a landline. After reading up on 3G Routers I decided to take the plunge and go with the TP-LINK product. Once I received the router I followed the set-up wizzard, installed my T-mobile modem and hey presto up and running within minutes and this little router also allows me to connect to my Ipad and my desktop PC.

    All my worries gone - Thanks Amazon
    Was this review helpful to you?
    1 of 1 people found the following review helpful
    4.0 out of 5 stars Read the modem compatibility list CAREFULLY 26 May 2014
    Style Name:150M 3G/4G Wireless Router|Verified Purchase
    I've bought this as a backup to my ADSL service. The router arrived with an EU socket power supply which I wasn't too impressed with, but hey ho, one plug adapter later and we're good to go. The GUI is fairly intuitive but was written by someone for whom English is not their first language. But there's a Setup Wizard that can get you up and running.

    I ordered a Three E353 dongle to go with it, but the supplier sent me a more up to date dongle as the 353 has been discontinued. Sadly this dongle did not work. In addition, it is not on the published compatibility list from TP-Link. A lesson learned. I've since bought an E353 and a SIM card and - predictably - it worked first time. The last firmware for this router was over a year ago so I wouldn't expect new modems to be added to the support list.

    So...find out what you need modem-wise and stick to it and you should be okay.
    Comment | 
    Was this review helpful to you?
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