[Q] Can CAT 5E Cable maximum length be exceeded?
[A] It is clearly documented and generally accepted that 328 feet (100 meters) is the maximum length allowable in a single run of CAT 5, CAT 5E and CAT 6 Cable.
The standard is based on worst-case scenario, assuming that the network is operating using components that are barely achieving specifications. In other words, minimum standards.
Because of this, there have been isolated instances where installers have been able to utilize runs of up to 400 feet or more in ideal situations. These have almost always been temporary runs connected to newer and faster equipment.
If you decide to attempt these excessive length runs of cable, you keep in mind that you do so at your own risk. There is absolutely no way to ensure it will work.
CAT 5 Cable Company will not produce cables in excess of the 328 foot standard due to this likelihood of failure.
5 Cable Company sells CAT 6, CAT 5E, and CAT 5 Patch and Crossover cables in 9 colors, custom fit to any length up to 328 feet.
RELATED FAQ QUESTION: What is the difference between patch and crossover cable?
Keywords: CAT 5E Patch Cable, CAT 6 Patch Cable