This added isolation is needed since the 600MHz frequency used can thrust a highest of 10Gbps over 330 ft. More a short while ago, the introduction of Cat 7A cable enhances the velocity to 1GHz and throughput to 40Gbps, but tops out at 165 toes. Wire Cutters – Wire cutters, https://www.amazon.ca/gp/product/B0D4X3FPJ8