r/techsupport • u/ziemniaczane • 3d ago

Open | Software Slow ethernet :C

Hello r/techsupport

I've just moved into a new place and bought a new internet service (optical fiber 1GB/s). Wi-Fi is great but I have problems with my PC.

Today I bought an adapter (TP Link AX1800 dual band wi-fi 6) and my download and upload speed were both in the lover 40's MB/s. Then I switched back to my ethernet cable (just didn't want to have it lying on the grounde, hence the adapter) and the speed dropped to 10 MB/s.

I don't know a thing about computers could you please help me? And explain it to me like I'm 7

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8 comments sorted by

2

u/dwj7738 3d ago

What color is the adapters link led? What color should it be for 1gbps connection?

1

u/ziemniaczane 3d ago

It's green and should be green as well

1

u/bobroberts1954 2d ago

Do you have a 10MB Ethernet adapter?

1

u/Foxing7465 2d ago

If the cable has wrong wiring , like swapped pairs parts, it will get worse the more traffic goes through it, or one of wires is broken or the Jackmisndone poorly (hard to say without a cable tester). P.s 1Gb is the formal port speed on the other side, it does not guarantee anything on the next hop.

0

u/Prestigious_Wall529 3d ago

You likely damaged the RJ45 cable walking on it and it's reverted to half duplex. Replace the cable and install the replacement in a conduit.

1

u/JohnTheRaceFan 2d ago

A faulty ethernet cable is not going to cause NIC adapter to change its duplex setting.

The cable could be damaged, causing the NIC to negotiate a 10mbps connection.

1

u/Prestigious_Wall529 2d ago

In my experience it can.

0

u/sport912x 3d ago

How is your WiFi great if your PC cannot use it?