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TP-Link TL-MR3420

details: 3G/3.75G Wireless N Router
hardware type: Travel Router
date added: 2010-08-06
updated: 2015-02-16
TP-LINK's TL-MR3420 3G/3.75G Wireless N Router allows you to quickly set up a 300Mbps wireless network on-the go and share a 3G/3.75G mobile connection. By connecting a UMTS/HSPA/EVDO USB card to the router, a Wi-Fi hotspot is instantly established
allowing users to share a 3G Internet connection anywhere 3G coverage is available. So whether you're on the train, camping, or at a construction site, you'll have a reliable wireless connection to accommodate your networking needs.

The TL-MR3420 3G/3.75G Wireless N Router provides 3G and WAN (xDSL, static IP, or dynamic IP) two kinds of broadband connections to get on the Internet from anywhere. Automatic 3G/WAN failover feature just provides nonstop internet connectivity.

TP-LINK 3G Router supports speeds up to 300Mbps, 15x that of traditional 11g products, surpasses 11G performance enabling the use of high bandwidth-consuming
applications such as HD Videos.

QoS acts as a "bandwidth manager" to ensure that those programs that are sensitive to lag are given as much bandwidth as possible to avoid lag. This feature is especially useful for streaming video or music, or playing online games where lag often means "Game Over".
 TL-MR3420 Features
 Availability: currently available
 LAN / WAN Connectivity
 WAN ports: 1
1 USB port for UMTS/HSPA/EVDO USB Modem
 WAN port(s) type: 10/100 Base-TX (RJ-45)
 WAN port auto cross-over: yes
 LAN ports: 4
 LAN ports type: 10/100 Base-TX (RJ-45)
 LAN ports auto cross-over: yes
 USB port(s): 1
 USB port type: USB 2.0
 Auto-failover connection: yes
 NAT routing: yes
 Multihomed: yes
 DMZ: yes
 Port forwarding: yes
 Port triggering: yes
 DHCP server: yes
 DHCP client: yes
 Dynamic DNS client: yes
 QoS: yes
 UPnP: yes
 MAC Address clone: yes
 Maximum Wireless Speed: 300 Mbps (Wi-Fi 4)
 WiFi standards supported: 802.11b (Wi-Fi 1)
802.11g (Wi-Fi 3)
802.11n (Wi-Fi 4)
 Wifi security/authentication: WEP
Wireless MAC Address filtering
 WiFi modes: Access point
Wireless bridge (PtP)
 external antenna(s): 2
 ext antenna(s) removable ?: yes
 Antenna connector: RP-SMA (Reverse SMA)
 WDS compatible: yes
 WMM (QoS): yes
 WPS (Wi-Fi Protected Setup): yes
 IPSec passthrough: yes
 L2TP passthrough: yes
 PPTP passthrough: yes
 SPI firewall: yes
 DoS / DDoS protection: yes
 Filtering: Domain/URL blocking, MAC Address filtering
 Device Management
 Default IP address:
 Default admin username: admin
 Default admin password: admin
 Administration: Web-based (LAN)
Remote configuration (WAN)
Quick Setup Wizard
 Firmware upgradeable: yes
 Configuration backup/restore: yes
 Event log: yes
 Usage Statistics: yes
 Diagnostic functions: yes
ping, traceroute
 Misc hardware info
 NTP client: yes
 Product page:
 Quick Install Guide:

Please use the Add Comment function below to review devices you have used (please be descriptive). If you find an error in our database, or have additional information about the product, please
  User Reviews/Comments:
by Matty - 2010-09-25 10:47
TP-Link's website claimed this router was compatible with the Huawei E122 3G dongle. Indeed, it did connect to the internet and spoke with my PC. For a while. Then it decided that there was no internet access and would not connect again for a time. And then it would do it again. And again. With the dongle plugged direct into the PC there was no problem.
I tried emailing TP-Link's support line, both their international & UK centres, several times: I thought maybe a firmware upgrade would sort the problem. But they didn't have the courtesy to reply. Some of my messages were even rejected by their anti-spam software! Why do these people even pretend to offer help & support?
TP-Link: you don't do what you claim, and you're not interested.
And so, the router went back to the shop for a full refund.
Your loss.
by Sasetyo Noegroho - 2011-02-11 16:25
I need this device to replace wr1043nd and where in my resident have no wire broadband such as adsl, cable tv neither fiber optic. But some people said it maybe a problem to mr3420 then I should reconsider to purchase this device. I already have usb cdma evdo modem brand Venus VT18 evdo.

At this time I tried to connect the modem to tp-link wr1043nd and reflashed with dd-wrt latest version, the usb modem failed to detect.

Thanks for sharing the info.
by scorillos - 2012-01-25 09:27
can you connect an external HDD?
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