Network Diagnostic Information


Windows Forum Team
Staff member
I noticed you say you made the cables. I would put it on a tester then or buy some premade online.


Extraordinary Member
A cable following the T-568B standard is a crossed cable. Some computers auto detect and correct it, but not all.
I think you should use the T-568A standard.


Windows Forum Team
Staff member
If it's going computer to a router a B cable would be correct. If it were to a switch it would be an A cable. Most devices today can detect and switch the Tx Rx logic
I have some updates. The cable works on Windows XP with Atheros AR8121 PCI-E network card.
In windows 7, with Realtek RTL8101 PCI-E network adapter, doesn't work and have exactly the same behavior with Windows 10 running a Realtek chip using PCI-e. (seems like the cable isn't connected properly, keep trying to identify connection). Also checked with another windows10 machine with the same results.

All drivers are updated and are the latest available. The other end of the cable is connected to a router/modem of ZTE (ZXHN H108N V2.3) running modulation ADSL2+
With some further digging, it seems the cable is bad quality.
When I changed Speed&Dublex down to 10Mbps it worked. I suppose XP use low-speed connection by default since its an old OS.

Thanks everyone for your valuable help, especially Neemobeer.
Best regards.


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I'm having a networking problem. I'd like to post the Network Info file but I use a Hosts File to block websites. It comes out a really big file. Would that be Ok to post or should I deal with all of the Hosts entries first.