Can You Use Fiber Optic Cable with RJ45? | Explanation and Network Conversion Guide
IntroductionAnswer first: a fiber cable cannot plug directly into an RJ45 copper Ethernet port because the media and signaling differ; use a supported media converter, a switch with the correct SFP-family port, or an approved copper-to-optical module pair. Cisco's 10GBASE SFP+ data sheet shows that copper RJ45 modul...