Extend Ethernet to 300m From Router to PC: The PoE Trick Explained

Published at : 18 Dec 2025

How do you deliver a stable gigabit wired connection nearly 300 meters away—without fiber and without wireless? In this video, I walk you through the failed attempt, the discovery, the PoE injector fix, and the final optimized 300m single-cable gigabit solution… plus the one critical safety step most people forget outdoors: Ethernet surge protection. Perfect for warehouses, CCTV systems, remote PCs, and IoT gear.

00:00 The 300m Gigabit Problem (No Wi-Fi, No Fiber)
Why Standard PoE Extenders Failed (No Power!)
Fixing the Power Issue With a PoE Injector
The Game-Changer: One 300m Cable, Two End-Point Extenders
Installation Tips: Outdoor Cable, Testing, Surge Protection


Devices Used:

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