Download—Mbps
Cloudflare edge testPerformance, not guesswork
Why is Ethernet slower than Wi-Fi?
Wired should usually be the more consistent connection, so a major speed gap often points to link negotiation, cable, port or adapter limitations.
DownloadUploadPingJitterLoss
Upload—Mbps
Ping—ms
Jitter—ms
Packet loss—%
ETHERNET SPEED FIX
Check the negotiated Ethernet link before changing Windows tuning settings.
A gigabit internet plan cannot pass through a 100 Mbps Ethernet link at full speed. Verify the physical link rate, then work outward through cable, port, adapter and driver.
Check link speed
Windows adapter status should show the negotiated Ethernet speed. Around 100 Mbps often indicates a cable, port or negotiation issue on a gigabit network.
Try another cable
Damaged pairs can make gigabit Ethernet fall back to 100 Mbps while still appearing connected.
Try another router port
Some equipment has mixed-speed ports, and an individual port can also be faulty.
Check USB Ethernet adapters
Older USB ports or low-end adapters can cap throughput below modern Wi-Fi speeds.
Keep Speed & Duplex on Auto normally
Forcing a duplex or speed setting can create mismatches. Auto-negotiation is the correct default on modern Ethernet unless diagnosing a specific compatibility issue.
Update the Ethernet driver
Install the current adapter or motherboard LAN driver if negotiation is unstable or performance changed after a system update.