Although Cat5e supports Gigabit up to 100m in theory, it’s at the limit of it’s capability in real life installations and it often does not support this. This is due to a variety of factors – interference, tight bends, poor terminations – they can all have a detrimental impact to performance; in reality some Cat5e installation will only support GbE up to 45m.

It’s far better to use a cable that’s a higher specification, such at Cat6 or above, as there is enough headroom to counteract any interference and still provide the required bandwidth. The same applies to 10GbE, Cat6a should work and usually does, but for longer runs or convoluted installations Cat7 or 7a cable is the better choice.

Category of
Cat5eUp to 100MhzSupports GbE (Gigabit Ethernet/1000Mbps) up to 100m
Cat6Up to 250MhzSupports GbE up to 100m
Cat6aUp to 500Mhz Supports 10GbE up to 100m
Cat7Up to 600Mhz Supports 10GbE up to 100m
Cat7aUp to 1000MhzSupports 10GbE up to 100m


Universal Networks supplies both pre-assembled and un-terminated UTP and STP copper networking cables.

For further information call us on 01488 685800 to discuss your requirements or contact us.