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Category-5 (Cat-5) is an Ethernet network cable standard. Cat-5 is the fifth generation of twisted pair Ethernet technology and the most popular of all twisted pair cables in use today. Cat-5 enhanced (Cat-5e) supports networking at Gigabit Ethernet speeds (up to 1000 Mbps) over short distances by utilizing all four wire pairs, and it is backward-compatible with ordinary Cat-5.