What is an sfp slot on a switch?

What is an sfp slot on a switch? slot sfp SFP port is a recessed slot in a network device for accommodating a matching small form-factor pluggable slot gampang pecah x500 F1118P-16-150W is a IP-COM PoE switch that offers 16 10100 Mbps Base-TX RJ45 ports, 1 101001000 Mbps Base-T RJ45 ports, and 1 1000 Mbps Base-X SFP port

slot gampang pecah x500 JetStream 24-Port SFP L2+ Managed Switch with 4 10GE SFP+ Slots As a 10G switch that seamlessly integrates into the Omada Software Defined Networking

slot 2500 16 Port Gigabit Ethernet Poe Switch with 2 SFP Slot Uplink for CCTV VoIP Wireless, Find Details >and Price about Poe Switch, Ethernet Switch from 16 Port Buy Netstar 101001000 Mbps Ethernet to SFP Media Converter with SFP Slot – Supports 1G SX, 1G LX SFP Modules 1 Port SFP to 1 RJ45