Most modern fiber-enabled network switches require an SFP transceiver module featuring a duplex (two strand) multimode OM3 or duplex single mode OS2 connection with LC connectors. Direct attach cables with pre-terminated SFP connections may also be used. If you're looking to learn how to configure fiber optics on a Cisco switch, it's important to first configure the switch settings so it's ready for fiber optics. This guide breaks down exactly how to use SFP ports on UniFi switches and gateways for fiber connections, what modules you'll need, and a. In this article, we'll explain how to connect multiple Ethernet switches using fiber optic cables and the equipment required for this to work. Simply put, it defines how network.