BlueOptics SFP Gigabit Ethernet RJ45 1000Base-T 100m The BlueOptics BO08C28S1 Small Form Factor Pluggable (SFP) transceiver with RJ45 connector from CBO is designed for Gigabit Ethernet (GbE) high-speed applications of up to 1.25 gigabits per second over Cat5 Twisted Pair Cable. BlueOptics SFP Transceiver Copper RJ45 1000BASE-T 100M 0°C/+70°C