Aurora R12, Ethernet is slow

Have you tried using another new Cat 6 or Cat 7 cable? Possibly this MS forum thread may help. Do you have Smartbyte installed and if so uninstall it. It should not make a difference but since you have another card installed disable the integrated adapter and the WiFi adapter  in Device Manager. As strange as it sounds it is almost like your hardware is running at 10/100 instead of 10/100/1000/2500 mode. Also if you have any Killer software installed, uninstall it.

Re: replaced the ethernet cord

JOcean is spot on. 100 Mbps ethernet speed limit on a high speed modem is almost always due to a bad ethernet cable even when it looks new or good. Get a brand new Cat 6 cable and make sure you hear a clear crisp snap when it is connected to both modem and pc.  I had a brand new Cat 6 cable that ran at 800 Mbps at first, but after just 5-6 mating cycle went down to 100.  Replacing the cable did the trick.

If brand new cable has no effect, try replacing the current boot drive with a test hdd, do a clean install of Windows 10 on it, test speed again.  If still at 100, I would suspect the motherboard LAN port connector interface has physically worn out, like the physical connector end of Cat 6 cable getting bad from too many mating cycles preventing a clean crisp snap on with ethernet cable.  Two remedies: install a third party ethernet card, or use a high speed usb dongle.

I've replaced the cable twice.

I've replaced the cable twice, I also tried the MS forum you posted. Didn't work.

I don't have Smartbyte installed and I had already uninstalled the Killer software.

Still getting 100 Mbps.

What network device are you using, and what's the negotiated link speed of the network adaptor in use?

Open up a command prompt and type in wmic nic where netEnabled=true get name, speed

So, the reason why you get close to 100 Mbps is because your link speed is showing as 100 Mbps on your 2.5 Gbe adaptor.

Try going into the adaptor settings and force the link speed to 1 Gbps and see if it links properly. You select 1 Gbps full duplex from that drop down box.

Force 1 Gbps link speed 

Note: if your cable has an issue, or the port on your ISP modem has an issue, forcing 1 Gbps will cause it to drop the connection. In that case the issue is not with the link negotiation, but either with the cable or the port on the ISP modem.

You can check with your ISP on the modem they provide,  because for a 200 Mbps connection it's not unusual for ISP's to provide a 100 Mbps LAN port and wireless connectivity, and both combined are up to 200 Mbps.

Forgot to mention that the wireless connection to my computer is also 100 Mbps.

It doesn't matter which connection, wireless or ethernet, it's still 100 Mbps.

As I mentioned before, all other devices on my network are 200 Mbps. 

Yes, I removed anything that had killer in the name.

And you installed the regular NIC drivers instead of the killer ones, correct?

I don't understand how it could be my cable, I've replaced it at least 4 times with different cables even with a known cable to a device that is showing 200 Mbps. Even the wireless connection to the computer will not go above 94 to 97 Mbps. 

I called my service provider first and went thru the diagnostics with them, changing cables, ports, etc.

 Force 1 Gbps link speed did not work.

Below is a speed test on a different device on my network.

The 2.5 Gbe card did not link at 1 Gbps when you forced it.

What brand is the ISP modem?

No, it did not.

Calix Gigaspire Blast

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@showmehow wrote:

1a. I don't understand how it could be my cable, I've replaced it at least 4 times with different cables

1b. even with a known cable to a device that is showing 200 Mbps.

2. Even the wireless connection to the computer will not go above 94 to 97 Mbps. 

 

 

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1a. Probably not, but could still be the cable. Are they pre-made (packaged) Cat-6 or DIY hand--made ? Are the contacts shiny? 

1b. OK, so this is better and more conclusive.

2. Fine to test this, but when using wired-ethernet on the Aurora-R12, be sure it is disconnected from your Router's WiFi Access-Point, and the password has been "forgotten" in Windows. 

Wouldn't hurt to go ahead and then power-cycle everything (including cable-modem and what-not). 

As @Vanadiel  posted, sounds like the problem is related to the wired-ethernet negotiation only making a 10 or 100-speed connection instead of 1000 (gigabit). 

See Control Panel / Network & Sharing Center / Active Networks / Connections Ethernet / General / Speed / 1.0 Gbps (1000)