That said, all adapters are different and handle shorts or issues with cables or ports differently, but a Gigabit adapter reporting as Mbps is almost certainly a physical issue with the networking equipment. To check for this, check the link speed on the machine in question by following these steps:. This is the default setting. Unplug each Ethernet cable and plug it back in. If you do not feel and hear this, then this cable should be considered broken, and you need to replace it.

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Select Qualcomm Atheros network driver

That said, all adapters are different and handle shorts or issues with cables or ports differently, but a Ethsrnet adapter reporting as Mbps is almost certainly a physical issue with the networking equipment. When everything is working correctly, this speed will read as 1.

This is the default setting. Make sure each cable is labeled Cat 6 or Cat7. To check for this, check the link speed on the machine in question by following these steps:.

Select Qualcomm Atheros network driver

If the link speed shows as 1. The fastest way to rule out any problems with anything other than cabling is to connect your machine directly into your modem with a single, proven Cat 6 or better Ethernet cable, and preferably into a proven Gigabit capable port, then check the link speed. However, if you were getting Gigabit using a particular setup and suddenly, with no changes whatsoever, your link speed is now Mbps, then it’s probably only one cable that is now having issues, and it is likely one that is exposed.

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If this is the case, you may be encountering a link speed issue.

This means that the negotiated connection speed between the Ethernet adapter and whatever device it is plugged into is Mbps. This is a very, very common occurrence when troubleshooting Gigabit Ethernet, and atherks nearly always comes down to one cable being the culprit. We have had reports of some ISP technicians telling their customers that a Gigabit option will appear in this setting if the network adapter is working correctly.

Using this method of troubleshooting can be a pain if you are not dealing with a laptop, but it might still be worth doing if you have to decide if you need to call a contractor out to look at wiring behind your walls. You may find that your Ethernet speed is capped at Mbps when your Internet Service Provider, or your internal network connection, should be providing speeds ethsrnet than Mbps.

Killer Networking Knowledge Base | Killer Ethernet Driver – Ethernet Link Speed Capped at Mbps

Before troubleshooting any further, check the connection of the Ethernet cable into every piece of networking equipment, as well as your computer. If you do not feel and hear this, then this cable should be considered broken, and you need to replace it.

If this is set correctly and your link speed still reads as Mbps, then the issue could be a few things, although it is important to note up front that this is almost always an issue with an Ethernet cable. Note that very long Ethernet cords are available for purchase, with lengths of over feet or 60 meters, are available, so if you are involved in a 100//10 debate with a technician over link speeds, this might be the simplest way to provide a temporary, single cable connection from your machine to the modem.

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Notice that the link “Speed” here reads as Mbps.

Unplug each Ethernet cable and plug it back in. Even if ahteros firmly believe that your Ethernet cabling is perfectly fine, and even if this cabling worked fine before, swapping it out for another, proven cable, or a brand new Cat 6 cable, will almost certainly solve the issue athdros the minimum of troubleshooting and headache. The only setting that is of concern for a Gigabit connection is that the adapter is set to Auto-Negotiate.

Note that this includes all cabling between the machine and the router, including any cabling in before and after any switches, or on the other side of any wall jacks, and behind the wall.