This is a copper Small Form pluggable (SFP) transceiver, which is based on SFP multi-sourcing agreement (MSA). It is compatible with the OC3/ OC48 SONET and 1000BASE Ethernet standards as specified in IEEE Std 802.3. The physical layer IC(PHY) can be accessed via I2C, allowing access to LIMITED PHY settings and features.FEATURES 100Mbps / 1.25Gbps /2.5Gbps/ 5Gbps bi-directional data links RJ45 Max link distance 100 metres Fully metallic enclosure for low EMI Compact RJ-45 Connector assembly Hot-pluggable SFP footprint Low power dissipation Extended case temperature: 0°C to 70°C RoHS compliant and Lead Free APPLICATIONS OC3/ OC48 SONET 1000BASE Ethernet WARRANTY3-years limited warrantyTAA-approved SFPs available upon request, Contact us for more details.