While the majority of 1Gb environments will use RJ-45, there are some instances where cable paths need to go longer distances. SFP SX transceivers support distances up to 550 meters, SFP LX transceivers support distances up to 10 kilometers, and SFP ZX transceivers support distances up to 80 kilometers.
WARNING: This product contains a chemical known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.