High-frequency plugging and unplugging of SFP modules will shorten their service life. Disconnect fiber optic cables before removing or installing SFP. Small Form-factor Pluggable modules (SFP module) are the workhorses of modern network connectivity, enabling flexible fiber optic or copper links between switches, routers, firewalls, and servers. Whether you're upgrading bandwidth, replacing a faulty unit, or reconfiguring your topology, knowing. Before using the optical module, you should understand the taboos and correct operation methods of using the optical module. It is used as a hot-swappable I/O device that plugs into a module slot for Gigabit transport.