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Item#: N82E16833704074

TP-LINK TL-MR3420 3G/3.75G Wireless N Router IEEE 802.3/3u, IEEE 802.11b/g/n

  • Work with UMTS/HSPA/EVDO 3G modems
  • 3G/WAN failover keeps you "always-online"
  • Up to 300Mbps Wireless
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Learn more about the TP-LINK TL-MR3420




IEEE 802.3/3u, IEEE 802.11b/g/n
Device Management
Web Based Configuration(HTTP), SNMP v1/2c, Web Based Firmware Upgrade.
Support 64/128 bit WEP, WPA-PSK/WPA2-PSK, Wireless MAC Filtering
1 x 10/100M WAN; 4 x 10/100M LAN
Wireless Data Rates
Up to 300Mbps
Frequency Band
2.4GHz - 2.4835GHz
2 x 3dBi External Antenna
USB 2.0
VPN support
Power Adapter
Wireless Adapter included
System Requirements
Microsoft Windows 98SE, NT, 2000, XP, Vista or Windows 7, MAC OS, NetWare, UNIX or Linux
6.9" x 4.4" x 1.2"
0°C - 40°C (32°F - 104°F)
10% - 90% (Non-Condensing)


Compatible with UMTS/HSPA/EVDO USB 3G/3.75G modems, tested in the field

3G/WAN failover guarantees an "always-online" Internet connection

Wireless N speed up to 300Mbps

Supports PPPoE, Dynamic IP, Static IP, PPTP, L2TP Cable Internet access

CCA technology enhances users' signal stability by automatically avoiding channel conflicts

Easy wireless security encryption at the push of the QSS button

WDS wireless bridge provides seamless bridging to expand users' wireless networks

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


Package Contents
3G/3.75G Wireless N Router
2 Antennas
Power supply unit
Ethernet Cable
Resource CD
Quick Installation Guide

Quick Info


  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years

Customer Reviews of the TP-LINK TL-MR3420

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  • Ernest L.
  • 1/16/2013 2:42:15 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month

1 out of 5 eggsMaybe I got a dud

Pros: Easy to setup.

Cons: 3G/4G worked flawlessly for about 2 hours and then the USB port died. Router wouldn't talk to or recognize 3G/4G USB modem.
Currently waiting for my replacement. Hopefully it will last longer.

Manufacturer Response:

Dear Customer,

Unfortunately, it does indeed sound like you ended up with a "dud" -

We are sorry for this, and we do hope your replacement TL-MR3420 provides years of functionality for you.

If you have any questions or concerns that you would like to speak with us about, please don't hesitate to call!

Best Regards!
TP-LINK Support Team
(866) 225-8139

Did you find this review helpful? Yes No

  • Ravi S.
  • 3/19/2012 7:17:06 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

5 out of 5 eggsExcellent router if you are looking to take your WiFi with you

Pros: * WiFi wherever you go (as long as there is 3G coverage from your service provider)
* Optional wired connections (to connect your vonage/ObiHai/Other VOIP units)
* Support for more devices is being added via firmware updates and downloadable bin files on TP Link website.

Cons: * Some 3G USB sticks are still not compatible... so make sure that your service provider uses a compatible device.

Other Thoughts: With a compatible 3G USB stick, this thing works as expected. Speed of your net connection is obviously dependent on the 3G connection (if that is what you are using this with).

Added to that, if you have some sort of prepaid 3G card that charges you based on your usage, you could have that as a backup to your regular WAN connection (by setting WAN as the primary connection and 3G as the backup). Redundant internet connectivity at reasonable cost.

PS: I used this in India with Airtel 3G USB stick (Huawei brand). Never used this in US but website has a bunch of USB devices used in US that are compatible (either as part of the firmware or as additional bin files you could load during setup).

Did you find this review helpful? Yes No

  • Bret H.
  • 11/12/2011 8:37:09 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsVery Frustrating.

Pros: When first connected it worked as advertised. Secure and fast. Easy to connect with multiple devices. We were very happy, initially.

Cons: After about 45 days it would lose connection to the internet. We were constantly re-setting the router. We finally took it off and put our old D-Link router back on. It's a bit of a dinosaur, but at least it's dependable and maintains connection. In the 3 years we've owned that router, we never once had to re-set it to reconnect. The modem, yes, the old router, no. The hassle to go through with securing an exchange and/or refund is always frustrating and time consuming. I'm tempted to just eat the $55 and go purchase a different one, given all the steps/time it will take to process a return/exchange.

Other Thoughts: Hopefully we will be able to return it and exchange. I'm willing to give them another shot at customer satisfaction. I am concerned about the return, however, as I didn't keep "all the packaging materials". I am afraid I'll have to purchase another one and the "policy" won't allow an exchange given the lack of packaging materials I retained. In that case you can probably guess which brand of router I will avoid.

0 out of 1 people found this review helpful. Did you? Yes No

  • John Y.
  • 9/12/2011 7:53:25 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsUgh

Pros: Worked great when it actually worked.

Cons: Quit after 2 weeks.

Other Thoughts: After it took 20-30 minutes to FIND my 3G modem, it worked great...up to 2 weeks. Then the modem stopped responding and died out. Piece of junk, stay away from it.

Manufacturer Response:

Dear customer,
This is Howard from TP-LINK Support Force.

I apologize for any inconvenience caused by the adapter.
This problem is rare and strange.
If you wish, I would help you to solve this problem so that you won't waste your investment.
You may send an email to and specify to forward to Howard.He.
Thank you!

TP-LINK Support Force

If my suggestion solves your problem, could you please update your review?
Thank you in advance.

0 out of 1 people found this review helpful. Did you? Yes No

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Item#: N82E16833704074
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