Hummingbird Networks Brand 100% Compatible for HP J8177C X121 1G SFP RJ45 T Transceiver The Hummingbird Networks 100% HP Compatible J8177C 1000BASE-T Copper Small Form Pluggable (SFP) are based on the SFP Multi Source Agreement (MSA). It is compatible with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE Std 802.3. This module is for transmission at 1.25Gbps over universal twisted pair (UTP) Category 5 cable. It supports Ethernet standards which make it ideally suited for 1000BASE-T data communications. It offers customers a wide variety of Gigabit Ethernet connectivity options for data center, enterprise wiring closet, and switch-to-switch applications. Features• Supports 1000BASE-T operation in host systems with SGMII interface• Up to 1.25Gbps bi-direction data links• Up to 100m transmission over UTP Category 5 Cable• Hot-Swappable if your device supports• Lifetime Warranty• Plugs into SFP port• Compliant to SFP Electrical & Mechanical MSA• 0°C to +70°C case operating temperature range• Compliant with product safety standards.