What does this pattern look like?
This is an anonymised diagnostic pattern. The router looks healthy and devices connect, yet a wired computer or nearby WiFi test never improves. One cable, wall port, LAN port or network adapter negotiating at 100 Mbps can constrain the whole path.
Separate the layers: confirm the device-to-router link speed before changing WiFi, router or service settings.
A four-step check
- 01Check the link speed in the computer's network status. A 100 Mbps link is already a useful clue.
- 02Use a known-good Cat5e-or-better short cable directly between the computer and a router LAN port.
- 03Try another LAN port and remove docks, old switches or wall jumpers from the test path.
- 04Only after the link shows 1 Gbps or higher should you collect test conditions and investigate the service layer.
Two common mistakes
Avoid factory-resetting a router before checking the link: it can erase working configuration without changing a physical bottleneck. Also, WiFi tests vary with device, distance and interference; use a single-device, short-path wired comparison when assessing the service.
Need help describing the issue?
Include the plan tier, displayed link speed, whether a wall port or dock is involved, and a simple connection diagram.
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