The category 5e specification improves upon the category 5 specification by tightening some crosstalk specifications and introducing new crosstalk specifications that were not present in the original category 5 specification.[13] The bandwidth of category 5 and 5e is the same (100 MHz)[14] and the physical cable construction is the same, and the reality is that most Cat5 cables meet Cat5e specifications, though it is not tested or certified as such.
