When network speeds tank, we blame the router first. Then the ISP. Maybe we even swap out a perfectly good streaming device, thinking it's the culprit. Rarely does anyone bother checking the Ethernet cables — because cables just work, don't they? We plug them in, see a green light, and move on. Here's the thing, though: every Ethernet cable has a speed ceiling built into it, and if you're using an older category, that ceiling might be way lower than you'd expect. Cat5 and Cat5e cables are still everywhere in 2025, quietly choking networks that should be running circles around them.
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