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 and SFP LX transceivers support distances up to 10 kilometers.
SFP 1000Base-T RJ-45 Transceiver
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 and SFP LX transceivers support distances up to 10 kilometers.
IBM SFP 1000Base-T RJ-45, Copper, 1000 Mbit/s, SFP, TX, 100 m, IEEE 802.3, IEEE 802.3ab, IEEE 802.3u
IBM SFP 1000Base-T RJ-45. SFP transceiver type: Copper, Maximum data transfer rate: 1000 Mbit/s, Interface type: SFP. Certification: MSA. Width: 13.4 mm, Depth: 56.5 mm, Height: 8.5 mm