13/12/2025
CAT7 cables are ISO-standard, but after many service calls to homes with so-called CAT7 installations, I’ve seen wide variations across manufacturers. Many even use connectors that deviate from the TIA-568 standard, which often leads to poor terminations and additional connectivity issues.
TIA-568 CAT8, meanwhile, was largely superseded by fibre technology before it ever reached true mass adoption. Today, the market is flooded with many so-called CAT8 cables that are ISO-spec knock-offs rather than true compliant products.
Many people consider four-connector topology a rule that mustn’t be broken: “We can only have four connectors in a channel.” But is that really true?