Sure enough, 80% of the Cat 6 cables they tested from big box stores etc. failed the specification. More surprising, many of them didn’t even pass the Cat 5e specification. [Blue Jeans Cable ...

Cat Type of Bandwidth Data # Cable (MHz) Rate 8 ScTP/STP 2000 MHz 40-100 Gbps 7a ScTP/STP 1000 MHz 10 Gbps 7 ScTP/STP 600 MHz 10 Gbps 6a UTP/ScTP/STP 500 MHz 10 Gbps 6 UTP/ScTP/STP 250 MHz 10 Gbps ...