Features: Supports Links up to 30m using Cat 6a/7 Cable SFF-8431 and SFF-8432 MSA Compliant IEEE 802.3az Compliant Low Power Consumption (2.5W MAX @ 30m) Fast Retrain EMI Cancellation Algorithm Low EMI Emissions I2C 2-Wire Interface for Serial ID and PHY Register Access Auto-negotiates with other 10GBase-T PHYs Supports 100/1000Base-T using Cat 5e cable or better MDI/MDIX Crossover Multiple Loopback Modes for Testing and Troubleshooting Built-in Cable Monitoring and Link: Cable Length Measurements; Opens/Shorts Robust Die Cast Housing Bail Latch Style ejector mechanism Unshielded and Shielded cable support