Shown on the left is an end view of an ARJ45 plug, the right picture is the port opening on an ARJ45 PCB mounted jack. As illustrated by the red lines, both the plug and jack have 4 shielded quadrants, each containing a connector pair, which provides pair to pair isolation for improved Near End Cross Talk (NEXT) performance. This isolation method of high frequency connector design is far more effective and efficient than traditional CAT6a and lower performing RJ45 designs which require capacitive and inductive compensation techniques to achieve the required levels of performance. These compensation designs require lengthy engineering design cycles as well as rigid PCBs manufactured with very tight tolerance requirements.