This switch provides eight Ethernet 10/100/1000Base-T copper ports and two SFP slots for fiber-optics. The SFP transceiver modules should always be installed in pairs with a technically. The following SEL devices use SFP transceivers for fiber-optic communication: SEL has qualified a range of SFP transceivers that meet the required temperature and environmental specifications of SEL products. Fast, low-cost, future-proof way to deploy long network segments. SFP ports allow for the use of fibre-optic connections, expanding the Ethernet network beyond 100m, ensuring reliable data transmission over long distances without signal degradation, and maintaining data integrity and system. Offering everything from 10 Mbps to 40 Gbps, StarTech. com provides reliable and seamless network solutions through our SFPs and Direct Attach Cables.