Category 5E Commonly referred to as “Cat 5e” is a twisted pair cable type designed for high signal integrity. It is often used in cabling for computer networks and is also used to carry basic voice services.
Category 6 Commonly referred to as “Cat 6” it is used to carry Ethernet 10Base-T, 100Base-TX, and 1000Base-T (Gigabit Ethernet) connections.
Cat 6 cable is backed with more stringent specifications for cross talk and system noise than earlier cabling standards.
Category 6E CAT6e is an augmented specification of CAT6. It is designed to double the frequency from 250 MHz to 600 MHz. There is no standard for CAT6e that is recognized by the TIA like there is for the CAT6 and CAT5e.