The following lines were added (+) and removed (-):
8 Reserved for Telephone use 7 Reserved for Telephone use 6 Input Data (-) 5 Reserved for Telephone use 4 Reserved for Telephone use 3 Input Data (+) 2 Output Data (-) 2 Output Data (-)''* since it is best to think of the lock tab as always facing down, we put the above pin listing in descending order.'' 3 Input Data (+) 4 Reserved for Telephone use 5 Reserved for Telephone use 6 Input Data (-) 7 Reserved for Telephone use 8 Reserved for Telephone use* The blue and brown wire pairs on pins 4, 5, 7, and 8 are not used in either standard.* Do not exceed 330ft in a single cable run for 100BaseTX fast Ethernet.* Do not exceed 980ft in a single cable run for 10baseT Ethernet.Ironically, the wires on pins 4, 5, 7, and 8 could be cut and completely omitted from the connectors. They are not used in 10BaseT or 100Base-TX.