this post was submitted on 30 May 2025
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Cable strength. Loose cabling can cause contact and thus signal issues
Or stretch out the twists in the individual wires. That will also cause signal issues.
IIRC, cat5 cables are rated for 50lbs of force on them. They'll technically hold a lot more than that, but you can't guarantee the twists will stay in spec.
If you stretch, kink, or squish a CAT5 cable, there is a good chance that it will not work at 1G even if none of the conductors are broken or shorted. Sometimes they will initially connect at 1G, then fall back to 100M after some random amount of time making troubleshooting more annoying.
Loose cables can also damage the port and themselves.