TP-Link TL-MR6400 4G LTE 300Mbps Wireless N Router SIM Slot Unlocked | Wty

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