CAT6A Cabling 10Gb
CAT6A is a TIA/EIA ratified standard for running 10Gb Ethernet up to 100m and is the cabling of choice for data centres or links between cabinets as an alternative to 10Gb multimode fibre optic cabling.
Cat6 cable is rated for 250 MHz, so it has a reduced maximum length (37-55 meters) when used for 10GBASE-T applications. Cat6a doubles that capability by performing at up to 500 MHz, which allows 10GBASE-T to be run over longer distances of up to 100 meters. Both Cat6 and Cat6a are backward-compatible with Cat5e.
The main advantage of CAT6 over CAT6 is a reduction in Crosstalk, in which a signal from one channel or circuit interferes with another channel or circuit's signal. Thanks mainly to better insulation, signal degradation from near-end crosstalk (NEXT) is already far lower in Category 6 cable than it was in earlier versions like Cat5 and Cat5e. Cat6a reduces this to an even lower level.
Due to the increased twisting of the pairs and shielding material CAT6 cable is considerably thicker and less flexible that CAT6, and it's foil shield has to be grounded, making it rather unwieldy and impractical for installation to the desktop due to the greater minimum bend radius allowed. Where 10Gb Ethernet to the desktop is a requirement we recommend the UTP Hubbell 10Gb (unshielded) solution.