The industry standard Cisco Small Form factor Pluggable (SFP) Gigabit
Interface Converter is a hot swappable input/output device that plugs into a Gigabit Ethernet port or slot, linking the port with the network.
The 1000BASE T (GLC T) SFP module is compliant with
IEEE 802.3:2000 and plugs into a standard Gigabit Ethernet SFP module port. It operates on standard Category 5 wiring and has an RJ 45 connector.