TP-Link TL-MR3420 300Mbps 3G/4G Wireless N Router
- Supports Compatible 3G/4G USB Modems for Mobile Internet Sharing
- Wireless N Speeds Up to 300Mbps with Support for Up to 32 Devices
- 3G/4G and Ethernet WAN Backup for Reliable Always-Online Connectivity
- WPS, Bandwidth Control, Parental Controls & TP-Link Tether App Management
TP-Link TL-MR3420 300Mbps 3G/4G Wireless N Router
Share 3G/4G Mobile Internet Over Wi-Fi
The TP-Link TL-MR3420 is a Wireless N router designed to share internet access from compatible 3G and 4G USB modems across multiple Wi-Fi devices. By connecting a supported LTE, HSPA+, HSUPA, HSDPA, UMTS or EVDO USB modem, users can create a wireless hotspot for laptops, smartphones, tablets and other connected devices.
The router also supports a standard Ethernet WAN connection, allowing users to switch between wired broadband and mobile internet. This dual-connectivity design provides a practical backup option for homes, offices and locations where uninterrupted internet access is important.
Product Features
3G/4G USB Modem Support: Compatible USB mobile broadband modems can be connected to share their internet connection across a wireless network.
300Mbps Wireless N: Provides wireless speeds up to 300Mbps for web browsing, local file sharing, HD video and everyday network applications.
Up to 32 Connected Devices: The TL-MR3420 is designed to support up to 32 online devices simultaneously under suitable network conditions.
3G/4G Router Mode: Connect a compatible mobile broadband USB dongle to create a shared Wi-Fi network from a cellular internet connection.
Wireless Router Mode: The router can also connect to conventional wired internet through its Ethernet WAN interface.
Connection Backup: Support for both 3G/4G mobile internet and Ethernet WAN allows users to configure a backup connection for improved internet availability.
WPS Security: The dedicated WPS button provides a convenient method for connecting compatible wireless devices securely.
Bandwidth Control: Administrators can allocate available bandwidth among connected devices to better manage network usage.
Parental Controls: Supported parental control features provide additional management over internet access for connected users and devices.
Access Control: Network administrators can manage which compatible devices are allowed to access the network.
TP-Link Tether App: Supported router settings can be configured and managed through the TP-Link Tether app on compatible Android and iOS devices.
Web-Based Management: An intuitive browser-based interface provides access to network setup and configuration options.
Product Specifications
| Brand | TP-Link |
| Model | TL-MR3420 |
| Product Type | 3G/4G Wireless N Router |
| Wi-Fi Standard | IEEE 802.11n |
| Wireless Class | N300 |
| Maximum Wireless Speed | Up to 300Mbps |
| Mobile Internet Support | Compatible 3G / 4G USB Modems |
| Supported Mobile Technologies | LTE / HSPA+ / HSUPA / HSDPA / UMTS / EVDO* |
| Maximum Connected Devices | Up to 32* |
| Operating Modes | 3G/4G Wireless Router Mode / Wireless Router Mode |
| WAN Backup | 3G/4G + Ethernet WAN |
| WPS | Supported |
| Bandwidth Control | Supported |
| Parental Controls | Supported |
| Access Control | Supported |
| Mobile Management | TP-Link Tether App |
| Web Management | Supported |
*4G LTE modem compatibility applies to supported TL-MR3420 hardware versions, including Version 2.0 and later. Exact USB modem compatibility should be confirmed before purchase.
Turn a 3G/4G USB Dongle into a Wi-Fi Hotspot
The TL-MR3420 allows a compatible USB mobile broadband modem to be shared wirelessly. This makes it useful in areas where fixed broadband is unavailable or where mobile data is required as a temporary or backup internet connection.
Up to 300Mbps Wireless Performance
Wireless N speeds up to 300Mbps provide sufficient bandwidth for general browsing, video streaming, file sharing and multiple everyday wireless devices under suitable conditions.
Wired and Mobile Internet Backup
The router can use both Ethernet WAN and compatible 3G/4G mobile connections. This allows one internet source to be used as a backup when the primary connection becomes unavailable, depending on the configured operating mode.
Support for Multiple Devices
Up to 32 compatible devices can connect simultaneously, making the TL-MR3420 suitable for small homes, offices and shared environments with smartphones, laptops, consoles and other Wi-Fi devices.
Bandwidth and Access Management
Bandwidth Control allows administrators to manage how available internet bandwidth is distributed among users. Parental Controls and Access Control provide additional tools for managing network access.
Easy Setup and Management
The router can be configured through its web interface or the TP-Link Tether app. Supported settings can be managed from compatible Android and iOS devices for convenient day-to-day network administration.
Important Compatibility Information
The TL-MR3420 does not contain a built-in 4G LTE modem or SIM card slot. Mobile internet requires a separately purchased compatible USB 3G/4G modem.
USB modem support varies by modem model, mobile operator, country and router hardware version. Confirm that the intended USB dongle is included in TP-Link’s compatibility list before purchase.

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