The correct way: Before insertion, flip the bail clasp to the open (up or out) position. Push the module into the port until it clicks (see Mistake #3). The good news? These mistakes are easy to avoid once you know what to watch for. Below, we break down the five most common. 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. When using the SFP module, you need to follow the correct steps strictly. Although the. This section describes how to install an optical module.