A wired connection runs at 100 Mbit while you expect 1 Gbit
Often a kinked cable, a bad patch cable, or a switch port that cannot do what you think. Cuts your usable speed in half.
Try this first
- 1Click the network icon in Windows or macOS and look at "link speed". Says 100 Mbit? Then the cable did not negotiate gigabit.
- 2Swap the UTP cable for one you know is good (cat6 or better, undamaged, no tape).
- 3Swap the switch port. Some ports are 100 Mbit only, or there is an internal fault.
- 4Inspect the cable: kinks, sharp bends, or someone extending it with a dubious coupler are common causes.
When to bring us in
If whole groups of desks are stuck at 100 Mbit, your cabling is probably cat5 or worse. Replace with cat6 over a quiet weekend; we arrange it.
See also
- Wi-Fi drops randomly across the officeFirst rule out whether it is the access points or the internet connection itself. Different fix.
- One room or corner has no or bad Wi-FiNot always "add another AP"; often one is poorly positioned, or there is a metal wall in the way.
- Internet is suddenly slow for everyoneThree suspects: your provider, a colleague soaking the line, or a backup or update kicking in unexpectedly.
None of the above fits?
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