The SFP port is a built-in optical port of a Gigabit Ethernet switch, so it cannot be directly connected with a twisted pair or a jumper. It needs to be connected to an optical module first, and then it can be transmitted with an optical fiber patch cord. The RJ45 port is for copper cable. These installation instructions provide overview and specification information for small form-factor pluggable (SFP/ SFP+/SFP28) modules, as well as instructions for installing and removing the modules. These transceiver modules are hot-swappable input/output (I/O) devices that plug into 100BASE, 1000BASE and 10GBASE ports (for SFP+), which connect the module. 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. The PoE switch with SFP can be linked together by using the fiber optical cable.
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