Ethernet speed limited to 10mbps following motherboard replacement
Ethernet speed limited to 10mbps following motherboard replacement
Another ethernet cable is possible, just requires moving the rig, replacing a 15m ethernet cable is not the one... I'm currently just downloading Ubuntu to try another OS I think i have a switch laying around somewhere i can try as well, will try and dig it out
Ubuntu was tested but still managed 10mb/s speed. An old RJ45 tester was found, all pins appeared normal, indicating no damaged cables. The connection was made using an old Mac Mini, and the cable connected to that port showed full 1gbps in the Meraki app. It seems the issue lies with the hardware or drivers rather than the port, router, or cable. Since another OS also reported 10mbps, I’d consider a hardware replacement—potentially RMAing it—but time is limited, so a USB3 → Ethernet adapter might be a quick fix.
Disconnect the cable and inspect the ethernet connector closely. Verify that all pins are aligned and no two pins touch each other. The contacts inside the jack function like springs, slightly bending when a plug is inserted. Occasionally, one pin may push out its channel and become permanently connected to another, shorting two pins. Generally, for 10 or 100 Mbps speeds, only four wires are needed in the cable (gold pins 1, 2, 3 and 6). This setup supports those speeds. For higher rates, ensure the remaining four wires remain separate and not touching. Check the connector on the cable to confirm the metal parts connect properly. Over time, heat or cooling can cause these connections to loosen, potentially damaging the cable. In extreme cases, the network card may fail. Consider upgrading to a proper PCIe X1 network card for better performance and lower latency compared to USB 3 cards. Installing it in your PC is worth the effort.
I have a compact ITX setup with just one PCI slot dedicated to my GPU, meaning I must use USB for networking. The cable works fine; it functions properly on another build at full 1Gbps. I reviewed the port and took a photo on my phone, zooming in—nothing appears amiss. I've already emailed support about the issue, noting that the network card seems faulty. Keep in mind it's a mini-ITX build, so only one PCIe slot is available, and adding another card isn't possible.