Cat 5e cable is an enhanced version of Cat 5 that adds
specifications for far end crosstalk. It was formally
defined in 2001 in the TIA/EIA-568-B standard, which no
longer recognizes the original Cat 5 specification.
Although 1000BASE-T was designed for use with Cat 5
cable, the tighter specifications associated with Cat 5e
cable and connectors make it an excellent choice for use
with 1000BASE-T. Despite the stricter performance
specifications, Cat 5e cable does not enable longer
cable distances for Ethernet networks: cables are still
limited to a maximum of 100 m (328 ft) in length (normal
practice is to limit fixed ("horizontal") cables to 90 m
to allow for up to 5 m of patch cable at each end). Cat
5e cable performance characteristics and test methods
are defined in TIA/EIA-568-B.2-2001.
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