RJ45 pinout problem - low network speed due cabling issue
Know the influence that a wrong "pinout" (mounting sequence of the conductors of an UTP cable on an RJ45 plug/outlet) has on the transmission performance of Ethernet network ports. In this case study, we will see why a "direct" pin-by-pin crimped cable caused a 100 Mb/s link to behave worse than a 10 Mb/s link.