How network interfaces, transceivers, connectors, media, speed, and optical characteristics must align for a working link.
A transceiver adapts a network device to a particular medium and signaling standard. Link compatibility requires the interface, module, cable, speed, and optical characteristics to align at both ends.
| Component | Typical purpose |
|---|---|
| RJ45 | Twisted-pair copper Ethernet connection |
| LC | Small-form-factor optical fiber connector |
| SFP / SFP+ | Pluggable interface family for selected Ethernet media and speeds |
| DAC | Short direct-attach link between nearby compatible ports |
Do not infer speed or medium solely from connector shape. For optical links, verify transceiver compatibility, fiber type, wavelength, and supported distance.