Ethernet Port

[CrySeeZ]

I have a ASUS tuf x299 mark ii motherboard my isp is Spectrum also I have a 5G wireless Pcie card.

 

Now the problem... i have a 300Mbps connection that until a few days ago was smooth running and giving me a 450+ Mbps readout and recently it slowed to 25 Mbps when in wired configuration. Now the confusion sets in because my wireless 5G card is still receiving 450+Mbps.

 

What I've done

Changed Ethernet cable

Changed Coaxel cable

Had ISP out to test box and connection (all of which checked out fine)

 

Why I'm confused

My LAN port is still giving me a reading and not completely dead and I'm unfamiliar if they die slowly or just die

 

Please Help

[WereCatf]

3 minutes ago, CrySeeZ said:

Please Help

Do you have e.g. a laptop or something that you could test the cable with and see what speeds you're getting? If you're getting faster speeds with the laptop (or other PC) using the same cable, then the next step could be to e.g. make a bootable Ubuntu Linux USB-stick, booting from it and then testing what speeds you get under Linux; if you got faster speeds using Linux, it'd mean it was just some software-issue and not a hardware-issue. If you got those slow speeds under Linux as well, it'd almost certainly then be a hardware-issue and you'd need to buy a PCI-E Ethernet-card.

[CrySeeZ]

Laptop gives reading of 450+ on same cable both PCs are running Windows 10 pro

 

So that is kinda what I kinda figured but wanted to confirm or see if there was something else I could try before sending my motherboard off to RMA  

 

Strange that the ports can slow way down without being fully dead I'm used to components fully failing I've learned something new so that's cool

 

Thank you for the help!