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TPLink MR6400TP-Link TL-MR6400 4G LTE 300Mbps Wireless N Router SIM Slot Unlocked

Excellent Grade · Fully tested · No visible marks
SKU: R-5433-EXC
4.76
★★★★★
708 reviews
12mo
Warranty
30day
Free returns
40+
Tech-tested checks
✓ Fast AU shipping ✓ Pickup: Springvale VIC
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$85.00 $115.00

You save $30

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Customize and Upgrade Your Device

  • Refurbished - 1yr Warranty - Reboot IT

    1yr Warranty

    $50.00 $75.00

Perks you get with every purchase

Warranty
If your item experiences a technical issue, we've got you covered—we'll either repair it or replace it for you!

30 days to change your mind
Feel free to return your item for any reason within the first 30 days of receiving it. It's that easy!

Free express shipping
Enjoy fast, free express shipping on all small items like laptops, tablets, and smartphones!

Customer support
Rest assured, we’ll always respond to you within 1 business day!

Frequently asked questions

What does the warranty cover?

Our warranty covers all hardware faults, but please note it doesn’t cover accidental damage or software issues. However, we’re here to help with technical support for those matters!

What is a refurbished device?

A refurbished device is a pre-owned item that has been restored to meet high-quality standards. At Reboot IT, we adhere to strict quality guidelines, ensuring that our refurbished products are not the same as used or secondhand items. We meticulously clean, test, and assess each device, replacing worn parts with high-quality components.

Unlike used items, which lack guarantees and rely solely on the seller's word regarding condition, refurbished devices come with assurance of quality and reliability.

What payment options are available?

We offer a variety of payment options to make your shopping experience as convenient as possible! You can pay using all major credit cards, Apple Pay, Google Pay, Shop Pay, Afterpay, Zip Pay, and PayPal. If you prefer, we also accept bank deposits and even cash for in-store purchases!

Safe & Secure

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

We ensure secure processing of your payment information and do not retain or have access to your credit card details.

Description

TP-Link TL-MR6400 Certified Refurbished 4G LTE Router

The TP-Link TL-MR6400 is a versatile 4G LTE wireless router that delivers reliable broadband connectivity via nano SIM — ideal for homes and small offices where fixed-line internet isn't available or as a dependable backup connection. Professionally tested and refurbished by Reboot IT (Melbourne, est. 2001), this unit includes a 12-month warranty and supports all major Australian 4G carriers on its unlocked SIM slot.

Key Benefits

  • 4G LTE Cat 4 speeds: Download up to 150Mbps and upload up to 50Mbps via the nano SIM slot — fast enough for HD streaming, video calls, and multi-device households.
  • Unlocked for all AU carriers: Supports FDD-LTE B1/B3/B7/B8/B20 and TDD-LTE B38/B40, making it compatible with Telstra, Optus, Vodafone and other Australian networks out of the box.
  • 300Mbps 2.4GHz WiFi: Dual-antenna 2×2 MIMO 802.11b/g/n WiFi distributes wireless coverage across an entire home or small office without dead spots.
  • Four wired Ethernet ports: Three dedicated LAN ports plus one configurable LAN/WAN port let you connect smart TVs, gaming consoles, NAS devices, or desktop PCs directly for maximum stability.
  • Easy app management: The free TP-Link Tether app (iOS and Android) plus a full web UI let you manage the router, monitor connected devices, and configure settings from anywhere on the network.
  • 12-month Reboot IT warranty: Every unit is individually tested and graded before sale — backed by a full year of warranty from Melbourne's trusted refurbished IT specialists since 2001.

Performance in Use

The TL-MR6400 is built around a MediaTek MT7628N MIPS processor running at 580MHz, paired with 64MB RAM and 8MB flash storage. This combination provides ample headroom for routing 4G traffic to multiple connected devices simultaneously without lag or dropped connections under normal home or small business loads.

The two detachable external 4G LTE antennas maximise signal reception in areas with variable mobile coverage, while the two internal WiFi antennas handle wireless distribution efficiently across the 2.4GHz band. The router supports WPA/WPA2-PSK encryption, an SPI firewall, DoS protection, and VPN pass-through for a secure and private browsing experience.

Setup is straightforward: insert your nano SIM, power on with the included 9V DC AU-plug adapter, and use the Tether app or browser-based web UI to get online within minutes. The configurable fourth port can be used as an additional LAN port or switched to WAN mode for a fixed-line fallback, making this an especially flexible solution for mixed-connectivity environments.

Technical Specifications

Specification Detail
Processor MediaTek MT7628N MIPS 24KEc 580MHz
RAM / Flash 64MB RAM / 8MB Flash
LTE Category Cat 4 — 150Mbps download / 50Mbps upload
SIM Type Nano SIM (unlocked, all AU carriers)
LTE Bands FDD-LTE B1/B3/B7/B8/B20 · TDD-LTE B38/B40 · 3G UMTS B1/B8
WiFi 802.11b/g/n 2.4GHz · 300Mbps · 2×2 MIMO
Ethernet Ports 3× 10/100 LAN + 1× configurable LAN/WAN
Antennas 2× detachable external 4G LTE + 2× internal WiFi
Security WPA/WPA2-PSK · SPI Firewall · DoS Protection · VPN Pass-through
Power 9V DC 0.85A (AU plug included)
Dimensions 174 × 124.5 × 33.5 mm
Management TP-Link Tether app (iOS/Android) + Web UI
Warranty 12-month Reboot IT warranty

Is It Right for You?

✓ Best For:
• Homes and offices without fixed broadband access
• A reliable 4G backup for existing internet connections
• Remote or rural locations with 4G mobile coverage
• Small businesses needing quick, plug-and-play connectivity
• Anyone seeking an unlocked router compatible with any AU SIM 		✗ Not Recommended For:
• Users needing 5GHz dual-band WiFi for congested environments
• Deployments requiring gigabit Ethernet ports
• Large homes needing wide-area mesh WiFi coverage
• Users who require 5G NR connectivity
• Enterprise environments requiring advanced VPN termination

Condition Grades Explained

Grade Cosmetic Condition Functional Testing
A — Excellent Minimal marks only — looks near-new with no significant scratches or scuffs Fully tested: 4G connectivity, all ports, WiFi, firmware verified
B — Good Light wear — minor scratches or scuffs visible under close inspection Fully tested: all functions verified, 100% operational

Frequently Asked Questions

Does the TL-MR6400 work with Telstra, Optus, and Vodafone SIM cards?

Yes. The router is unlocked and supports FDD-LTE B1/B3/B7/B8/B20 and TDD-LTE B38/B40, which covers all three major Australian carriers as well as most MVNOs. Simply insert a nano SIM and follow the quick setup guide.

What nano SIM speeds can I expect?

The TL-MR6400 is an LTE Category 4 device, capable of up to 150Mbps download and 50Mbps upload. Real-world speeds depend on your carrier's network, signal strength, and local congestion.

Can I use this router with a fixed broadband connection as well?

Yes. The fourth Ethernet port can be configured as a WAN port, allowing you to connect an existing modem or NBN connection as a fallback while using 4G LTE as the primary or backup link.

What does the refurbishment process involve?

Each unit is inspected, cleaned, firmware updated, and fully tested by our Melbourne-based technicians. It is then graded according to cosmetic condition and shipped with all required accessories including the AU power adapter.

What are the shipping costs?

Shipping costs apply based on size and destination — rates are calculated at checkout.

Is the warranty transferable?

The 12-month warranty is linked to the original order. Contact our support team at reboot-it.com.au if you have a warranty claim — we handle repairs and replacements from our Melbourne workshop.

Warranty & Why Buy From Reboot IT

12-Month Warranty Included — Every TP-Link TL-MR6400 sold by Reboot IT is backed by a full 12-month warranty. If anything goes wrong with the hardware during this period, we repair or replace it at no cost to you.

Reboot IT has been refurbishing and reselling IT equipment from Melbourne since 2001. Every device is individually tested and graded by our in-house technicians before it leaves our warehouse — you won't receive a unit that hasn't passed our quality checks.

Shop with confidence at reboot-it.com.au — Melbourne's trusted source for certified refurbished networking, laptops, desktops, and more.

Specifications
  • Model
    MR6400
  • Display Type
    IPS
  • Connectivity
    Ethernet Port, WiFi 5, LTE/4G
  • Video Inputs
    No Video Output
  • Colour
    Black
  • Warranty
    1 Year

What's in the box
  • TP-Link TL-MR6400
By buying refurbished, you avoid
250kg

of CO₂ vs. manufacturing new

And divert
4.5kg

of e-waste from landfill

Source: Cisco Catalyst PAIA lifecycle — per unit.

Why the MR6400?

Get reliable 4G LTE internet anywhere with this unlocked TL-MR6400 router delivering up to 150Mbps downloads and 300Mbps WiFi coverage for your entire home or office.

A black TPLink TL-MR6400 4G LTE 300Mbps Wireless N Router with SIM slot and two upright antennas, certified refurbished, shown with front indicator lights against a white background.

Unlocked 4G Connectivity

Works with all major Australian carriers including Telstra, Optus, and Vodafone through its unlocked nano SIM slot supporting FDD-LTE and TDD-LTE bands.

Four Ethernet Ports

Connect wired devices directly through three dedicated LAN ports plus one configurable LAN/WAN port for maximum stability and flexibility.

Fast Dual Internet

Delivers up to 150Mbps 4G downloads plus 300Mbps 802.11n WiFi with 2×2 MIMO technology for seamless multi-device performance.

Full Year Warranty

Professionally refurbished and backed by REBOOT IT's comprehensive 1 Year warranty for complete peace of mind.

Unlocked 4G Connectivity

Works with all major Australian carriers including Telstra, Optus, and Vodafone through its unlocked nano SIM slot supporting FDD-LTE and TDD-LTE bands.

Four Ethernet Ports

Connect wired devices directly through three dedicated LAN ports plus one configurable LAN/WAN port for maximum stability and flexibility.

A black TPLink TL-MR6400 4G LTE 300Mbps Wireless N Router with SIM slot and two upright antennas, certified refurbished, shown with front indicator lights against a white background.

Fast Dual Internet

Delivers up to 150Mbps 4G downloads plus 300Mbps 802.11n WiFi with 2×2 MIMO technology for seamless multi-device performance.

Full Year Warranty

Professionally refurbished and backed by REBOOT IT's comprehensive 1 Year warranty for complete peace of mind.

Let customers speak for us

from 708 reviews
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Fantastic service

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James Lees
All-in-one Solution for Home Office

I was looking for an in-expensive all-in-one solution for my home office to replace my existing desktop and monitor. I found this EliteOne 800 on reboot IT for under $200. I wasn't sure what to expect. It arrived within two days!!!! I upgraded the RAM, replaced the HDD and installed Windows 11. This is unbeatable value and was the cheapest price online. Coupled with a 3-month warranty, Reboot IT are by far the best online refurbished retailer I have used. Awesome!

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Apple iPad 6th Gen 9.7" 32GB Space Grey Wi-Fi + Cellular A10 Unlocked | Wty
Farley

Great service. Product in great condition and exactly what i want. I wanted this for a specific purpose but i dont need to spend $900 on a new one.

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Melinda Panuan
Excellent

Excellent work

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steve maloney
exactly as described and works well

exactly as described and works well , just like the staff down there. 10/10

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Anonymous
Very happy

Very happy, thank you

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Barbara Jenkins Jenkins
Just having trouble greeting it linked to the internet otherwise it’s okay

Just having trouble greeting it linked to the internet otherwise it’s okay.

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Anonymous
Fair tech for price

Fair tech for price, good specs for era, serves the purpose. The black keyboard is an interesting rubber like texture clearly by design to pad the screen and avoid the keyboard touching. Screen is great. Still looking for magic formula to enable computer use in the bright bright sunshine. Keyboard taps are loud for someone who likes silent touch. The perfect PC has to exist, like build a bear.

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IAN BOLSTER
Works excellently as advertised.

The laptop was sold with a warning about worn keycaps. In fact they had been obviously vandalised (ex school laptops, perhaps?). The keyboard worked fine, and the rest of the laptop too. I'm using it as a file server, so I don't need the keyboard much. So very pleased, and also pleased with reboot-it's service - as always, excellent, and quick responses to any queries.

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How Reboot IT Revitalises and Certifies Refurbished Equipment

Learn more

  • Device Arrival

    We carefully source certified refurbished computers from trusted corporate, government, and education sectors, giving each device a fresh start and new purpose.

  • Secure Data Wipe

    To protect your privacy, all previous data is securely and thoroughly erased from every tested refurbished device before it reaches you.

  • Comprehensive Testing

    Each certified refurbished computer undergoes detailed testing with specialized software to ensure full functionality, and any worn or faulty components are replaced exclusively with original parts, guaranteeing reliable, long-lasting performance for your tested refurbished device.

  • Cleaning & Grading

    Every computer is professionally cleaned and carefully graded, so you know exactly what condition your certified refurbished computer is in—giving you full confidence in your purchase.

WELCOME TO REBOOT IT

Australia's number one source for Refurbished Desktops, Laptops, Monitors and more.

Since 2001, Reboot IT has been Australia’s trusted source for certified refurbished computers and IT hardware. Every device is rigorously tested and professionally refurbished to deliver reliable, like-new performance — all at a fraction of the cost of new equipment. With over 100,000 satisfied customers, we combine expert quality with unbeatable value. Shop with confidence knowing your refurbished device comes backed by warranty and supports sustainable tech reuse.

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