What is the function of the SFP port?

What is Copper SFP Transceiver Module? sfp slot EnGenius SFP Modules not only work with any EnGenius Switch SFP Port, but also follow industry standards for compatibility with other brands sfp slot That is the SFP transceiver's function In certain circumstances, such as troubleshooting or during maintenance and network changes or upgrades,

sfp slot meaning An SFP port is a miniaturized, hot-swappable port that allows a networking device to interface with a fiber-optic or copper networking cable