TP-Link TL-MR3420 3G/4G Wireless N Router
The TP-Link TL-MR3420 3G/4G Wireless N Router is a versatile networking solution designed to share a compatible 3G/4G USB modem connection with multiple devices through wired or wireless networking. By connecting a supported USB modem to the router, users can create a Wi-Fi hotspot and share mobile broadband connectivity with computers, smartphones, tablets, gaming devices, and other compatible network equipment. Featuring Wireless N speeds of up to 300Mbps, the TL-MR3420 provides a practical wireless networking solution for home offices, small offices, temporary network installations, backup Internet connectivity, and locations where a conventional fixed broadband connection may not always be available. The router supports both wireless 3G/4G modem connectivity and a conventional Ethernet WAN connection, providing flexibility for different Internet access requirements. The TL-MR3420 also supports 3G/4G and WAN connection backup, allowing users to configure a preferred connection and use the alternative connection when required. Combined with four 10/100Mbps LAN ports, one 10/100Mbps WAN port, a USB 2.0 modem port, Wireless N connectivity, bandwidth control, and wireless security features, the TL-MR3420 provides a convenient all-in-one solution for compatible network environments.



Key Features
- 3G/4G USB Modem Sharing: Allows a compatible USB modem to provide Internet connectivity to multiple wired and wireless devices.
- Wireless N Technology: Supports wireless transmission speeds of up to 300Mbps under compatible 802.11n conditions.
- 3G/4G & WAN Backup: Supports flexible Internet connection backup between a compatible mobile broadband modem and Ethernet WAN connection.
- USB 2.0 Port: Provides a dedicated interface for compatible LTE/HSPA+/HSUPA/HSDPA/UMTS/EVDO USB modems.
- Four LAN Ports: Provides four 10/100Mbps Ethernet ports for wired network devices.
- 10/100Mbps WAN Port: Supports a wired Ethernet Internet connection when required.
- 2.4GHz Wireless Network: Operates on the 2.4GHz frequency band and supports IEEE 802.11b/g/n wireless standards.
- Up to 300Mbps Wireless Speed: Provides Wireless N connectivity for compatible applications and devices.
- WPS Security: Provides convenient one-touch wireless security setup using the WPS button.
- Bandwidth Control: Allows network administrators to manage and allocate available bandwidth among connected devices.
- Wireless Security: Supports compatible WEP, WPA, and WPA2 wireless security technologies depending on hardware and firmware version.
- Firewall Protection: Includes NAT and SPI firewall functionality along with additional filtering and DoS protection features.
- External Antennas: Uses two antennas to support the wireless network, with antenna design varying by hardware revision.
- Web-Based Management: Provides browser-based configuration and firmware management.
Technical Specifications
- Brand: TP-Link
- Model: TL-MR3420
- Product Type: 3G/4G Wireless N Router
- Wireless Standard: IEEE 802.11b/g/n
- Wireless Frequency: 2.4GHz / 2.4–2.4835GHz
- Wireless Speed: Up to 300Mbps
- USB Interface: 1 × USB 2.0 Port for compatible 3G/4G USB Modems
- WAN Interface: 1 × 10/100Mbps RJ45 WAN Port
- LAN Interfaces: 4 × 10/100Mbps RJ45 LAN Ports
- Ethernet Features: Auto-Negotiation / Auto MDI/MDIX
- Supported Modem Technologies: LTE/HSPA+/HSUPA/HSDPA/UMTS/EVDO USB Modems, subject to hardware-version and regional compatibility
- Wireless Security: WEP, WPA/WPA2, WPA-PSK/WPA2-PSK and Wireless MAC Filtering
- Firewall: NAT Firewall / SPI Firewall
- Wireless Functions: WDS Bridge, WMM and Wireless Statistics on supported versions
- Buttons: WPS/Reset, Wireless On/Off, Power On/Off
- Antennas: Two Omni-Directional Antennas; design varies by hardware revision
- Antenna Gain: Up to 2 × 5dBi on applicable versions
- Power Supply: External DC power supply; specification varies by hardware revision
- Dimensions: Approximately 204 × 138 × 44mm
- Operating Temperature: 0°C to 40°C
- Storage Temperature: -40°C to 70°C
- Operating Humidity: 10% to 90% non-condensing
- Storage Humidity: 5% to 90% non-condensing
- Certifications: CE, FCC, RoHS
3G/4G USB Modem Internet Sharing
The main advantage of the TL-MR3420 is its ability to share a compatible mobile broadband connection through a USB modem. After connecting a supported 3G/4G USB modem to the router's USB 2.0 port, the router can distribute the Internet connection to multiple devices through Wi-Fi or its Ethernet LAN ports.
This provides a practical networking option for locations where users need to share a mobile broadband connection instead of connecting each device directly to a cellular modem. Compatibility depends on the router hardware revision, supported modem, firmware, and regional network configuration.
Wireless N Connectivity Up to 300Mbps
The TL-MR3420 supports IEEE 802.11b/g/n wireless networking on the 2.4GHz band, with Wireless N transmission rates of up to 300Mbps under compatible conditions. This provides a convenient wireless connection for laptops, smartphones, tablets, smart devices, gaming equipment, and other compatible Wi-Fi devices.
Actual wireless throughput and coverage can vary depending on environmental conditions, connected devices, interference, distance from the router, network traffic, and other factors. The advertised wireless rate represents the maximum physical-layer rate rather than guaranteed Internet throughput.
3G/4G & WAN Connection Backup
The TL-MR3420 supports a flexible 3G/4G and WAN backup strategy. A compatible mobile broadband connection can be used alongside an Ethernet WAN connection, allowing users to configure the preferred Internet access method and use the alternative connection when required.
This feature can be useful for home offices, small businesses, temporary workspaces, and other environments where maintaining Internet connectivity is important. TP-Link documentation describes both 3G/4G Preferred and WAN Preferred backup modes on supported versions.
Wired Ethernet Connectivity
In addition to wireless networking, the TL-MR3420 provides four 10/100Mbps LAN ports for wired devices and one 10/100Mbps WAN port for compatible Ethernet Internet connections.
The Ethernet ports support Auto-Negotiation and Auto MDI/MDIX, helping simplify the connection of compatible network equipment. Wired devices such as desktop computers, printers, network storage, gaming consoles, and other Ethernet-enabled products can be connected directly to the router.
Bandwidth Control
The TL-MR3420 includes IP-based bandwidth control on supported hardware and firmware versions. This allows administrators to determine how much network bandwidth can be allocated to individual devices or computers.
Bandwidth management can be useful in shared network environments where multiple users access the same Internet connection and administrators want to help maintain a more predictable distribution of available bandwidth.
Wireless Security & Firewall Protection
The router supports multiple wireless security mechanisms, including WEP, WPA, WPA2, WPA-PSK and WPA2-PSK depending on the applicable hardware and firmware version. Wireless MAC filtering is also available for controlling network access from specified devices.
For network protection, the TL-MR3420 provides NAT and SPI firewall functionality, along with filtering and denial-of-service protection features such as MAC/IP/packet/application/URL filtering and protection against selected network attacks.
WPS & Easy Wireless Setup
The dedicated WPS button provides a convenient method for establishing a secured wireless connection with compatible devices. Instead of manually entering wireless security information in supported scenarios, users can use the WPS function to simplify the connection process.
The router also includes a physical Wireless On/Off control on applicable versions, providing convenient control over the wireless radio.
Web-Based Configuration
The TL-MR3420 provides web-based configuration and firmware management, allowing users to configure compatible router settings through a web browser. Depending on hardware version and firmware, management features can include Internet connection settings, wireless configuration, security controls, bandwidth management, access control, and other network functions.
Ideal Applications
- Home Networks: Suitable for sharing a compatible 3G/4G USB modem connection with multiple home devices.
- Home Offices: Provides flexible wired and wireless connectivity for remote and home-based work environments.
- Small Offices: Suitable for compatible small-office networks requiring mobile broadband connectivity or Internet backup.
- Temporary Internet Access: Useful for locations where a fixed broadband connection is unavailable or inconvenient.
- Internet Backup: Suitable for maintaining an alternative Internet connection through a compatible 3G/4G modem.
- Remote Locations: Can provide network connectivity where a compatible mobile broadband service is available.
- Shared Mobile Broadband: Allows multiple compatible devices to access a single USB modem connection.
- Small Workgroups: Provides wired Ethernet and wireless connectivity for multiple users and devices.
- Travel & Temporary Installations: Suitable for compatible temporary network deployments where a USB broadband modem is available.
Benefits
- 3G/4G Internet Sharing: Allows a compatible USB modem connection to be shared across multiple devices.
- Wireless N Performance: Supports up to 300Mbps wireless transmission under compatible conditions.
- Connection Backup: Supports switching between compatible 3G/4G and Ethernet WAN connections.
- Flexible Connectivity: Combines USB modem, wired Ethernet, and Wi-Fi networking in one device.
- Four LAN Ports: Provides wired connectivity for multiple Ethernet devices.
- Bandwidth Management: Helps administrators control bandwidth allocation among connected devices.
- Wireless Security: Provides multiple security options for compatible wireless networks.
- Firewall Protection: Includes NAT/SPI firewall and additional filtering functions.
- Easy Setup: WPS and web-based configuration simplify compatible network installation.
Why Choose TP-Link TL-MR3420
- 3G/4G USB Modem Support: Provides a practical way to share a compatible mobile broadband connection.
- Wireless N Technology: Delivers up to 300Mbps wireless transmission for compatible devices.
- WAN Backup: Supports flexible Internet connectivity through mobile broadband and Ethernet WAN.
- Wired & Wireless Networking: Provides four LAN ports together with 2.4GHz Wi-Fi.
- Security Features: Includes wireless encryption, firewall protection, filtering, and access-control capabilities on supported versions.
- Flexible Deployment: Suitable for homes, offices, temporary installations, and compatible remote-network environments.
- TP-Link Networking: A practical wireless networking solution from an established networking equipment manufacturer.
Compatibility & Important Considerations
- The TL-MR3420 requires a compatible 3G/4G USB modem when using mobile broadband connectivity; the router itself does not contain an integrated cellular modem.
- 4G LTE modem compatibility applies to Version 2.0 and above according to TP-Link's product documentation.
- USB modem compatibility can vary according to the hardware version, firmware, region, and mobile broadband modem model. Customers should verify compatibility before purchase.
- The router uses 2.4GHz Wi-Fi and supports IEEE 802.11b/g/n; it is not a dual-band 2.4GHz/5GHz Wi-Fi router.
- The Ethernet ports are 10/100Mbps, so wired connections do not provide Gigabit Ethernet speeds.
- Actual wireless performance depends on the connected client device, interference, distance, environment, and other network conditions.
- Hardware versions of the TL-MR3420 differ in antenna design and power-supply specifications. TP-Link's UAE support page lists V1, V2, V3, and V5 hardware versions.
- Customers should confirm the exact hardware version supplied with the product when specific modem compatibility or physical specifications are important.
Why Buy from IT Splendid (UAE)
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- Networking Solutions: Choose suitable networking hardware for Internet sharing, wireless connectivity, wired networking, and compatible backup connectivity requirements.
The TP-Link TL-MR3420 3G/4G Wireless N Router is a versatile networking solution for users who need to share a compatible 3G/4G USB modem connection across multiple wired and wireless devices. With Wireless N speeds of up to 300Mbps, four 10/100Mbps LAN ports, a 10/100Mbps WAN port, USB 2.0 modem support, wireless security, firewall protection, bandwidth control, and flexible 3G/4G and WAN connectivity, it is suitable for compatible home, office, temporary, and backup Internet applications. Customers should verify the exact hardware revision and USB modem compatibility before purchase, as TP-Link has released multiple TL-MR3420 versions with differing specifications and regional compatibility.
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