Each port must match the wave-length specifications on the other end of the cable, and the cable must not
exceed the stipulated cable length. Copper 1000BASE-T SFP module transceivers use standard four twisted-pair,
Category 5 cable at lengths up to 328 feet (100 meters).
Catalyst 2960-X and 2960-XR Switch Hardware Installation Guide
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Connector and Cable Specifications
SFP Module Cables