PC speed limitation at 100Mbps remains unclear.
PC speed limitation at 100Mbps remains unclear.
I recently upgraded from 100Mbps to 1Gbps via fiber, but my device still caps at 100Mbps. I suspect the issue lies with the router, cable, or my computer itself. The Cat5e cable should support higher speeds, and since it's a gigabit router, it shouldn't be the bottleneck. My router is delivering close to 1Gbps on my phone, which is impressive. However, my PC remains stuck at 100Mbps despite having a gigabit port and a Gigabit PCIe card. All network drivers are current. I attempted to force 1Gbps full-duplex mode and disabled various settings like "auto disable gigabit," but the speed hasn't improved. My motherboard is a B450 Tomahawk Max, and the card I purchased was an EDUP PCIE model (EP9602). If anyone has insights, it would be greatly appreciated. Currently, my only workaround is ordering a 5Gbps long-range Wi-Fi card, hoping it will push speeds beyond 100Mbps. My network performance: my computer's speed test vs. my phone's 5GHz test.
I'll test a different cable. All eight wires are required for Gigabit. A single damaged wire would cause the connection to drop to 100 Mbps since only four wires are necessary for that speed.
Did you verify whether every LAN port on the router supports gigabit speeds? Some models have ports limited to 100Mbps.
I thought it might have been different since it's mounted outside the house about 20 feet up, spanning from the first to the second floor. I wondered if I could reach out to my ISP to see if they could inspect the cable. Probably they wouldn't take much action—just telling me something was wrong with my old connection. When I asked them why my computer still had slow speeds, they said it looked like it only got 100Mbps and suggested an older machine. That made me frustrated, especially since I was told I could get a quote for replacing the cable. I just hope it wouldn't cost too much. Thanks for helping!
I haven’t, even though I called them and asked why I wasn’t getting the speed I paid for. They said “the computer in port 1?” and I confirmed it was there. Then they mentioned my machine can only handle 100Mbps, but maybe they didn’t realize I had their router. I’ll check the other ports now (thanks for your help).
Assume the exterior wiring is fiber optic. If damaged, you won’t have internet access. Connect the fiber to an ONT or internet gateway (such as a router). Then link Ethernet from there. I’m not sure about your country’s setup, but in the US the ISP handles the cabling that brings the internet and supplies equipment. I haven’t heard of an ISP running Ethernet outside for customer connections. Usually these cables are coaxial, fiber, or phone lines.
It's probable your networking cable or gear is limited to 100Mb speed. Verify devices like routers, APs, switches, and modems to ensure they support higher bandwidth connections. The cables connecting your equipment should also be capable of delivering gigabit speeds. Outside-to-inside cabling usually works fine; the issue likely lies with your home network hardware.
We connected a fiber cable to a box in the backyard. They placed the Ethernet cable through the kitchen wall, then up the house’s side to my bedroom, drilling a hole in the process. It seemed the run was shorter than going all the way up the stairs.
Do you have additional LAN cables available for testing? You could bring your desktop closer for better results and experiment with shorter cables.