What is the maximum distance that a CAT 5 cable can effectively run for computer networks?

The maximum effective distance for a Category 5 (CAT 5) cable in computer networks is 100 meters. This limitation is based on the specifications for Ethernet cabling, which indicate that beyond this distance, the quality of the signal can deteriorate significantly, leading to reduced performance and potential connectivity issues.

This 100-meter limitation includes both the horizontal cabling and any patch cords that connect to devices, ensuring that the data transmission remains reliable over this span. Beyond 100 meters, the risk of excessive attenuation and interference increases, which can impact the integrity of the data being transmitted. Therefore, for standard installations, including structured cabling systems in commercial or residential settings, sticking to the 100-meter limit ensures optimal network performance.