LAN Cable A and B Standards: Differences, Use Scenarios & Impact on Home Network Installation

The gentlemen above have some misleading information.

dedito wrote:

Standards were used to connect specific types of devices that sent / received data on certain pins, hence the need to change the transmitting and receiving pairs when connecting two of the same types (e.g. computer with computer).
Currently, it doesn't matter what standard you use, as most modern devices use auto patching.
https://pl.wikipedia.org/wiki/Auto_MDI-MDIX

As for the fact that there is auto cross today, you are right, but the reason for the change of the standard was not that different pins were used for the connections. Note that in both A and B standards, each pin on one side is "connected" to the same pin on the other side so your theory of "different connections" is false. You might as well fasten without keeping the standard, provided that each pin would be connected to the same pin - and I know those who do that (!) Because with short cables the 1Gb / s connection will be established. However, such a connection will introduce too much interference and you will not get a 1Gb / s connection at 100m. cable. And here is all the embarrassment. The standard A is the older one and the B is the newer standard, which is a bit better at reducing interference, and although both standards manage to establish a 1Gb / s connection, it is better to use the B standard.

saimon216 wrote:

....
Then tell me why if I mistook the wires in places it cut my internet speed, and when I connected the wires at both ends, I had full speed?

Because all 4 pairs of cables are needed to set up network cards for 1000Mb / s, and only 2 pairs (wires No. 1,2,3,6) are enough to set up cards for 100Mb / s (wires No. 1,2,3,6) and you must have made only 2 the pairs are properly connected. Sure the speeds you got were around 96Mb / s.