Intel Ethernet Converged Network Adapter X540-T2. 10GBASE-T Dual Port Passive heatsink PCIe 2.1 (5Gt/s) Standard Cat6a cabling with RJ45 connectors Energy efficient design ? single chip solution with integrated MAC + PHY passive heat sink Unified Networking delivering LAN iSCSI and FCoE in one low-cost CNA Flexible I/O virtualization for port partitioning and quality of service (QoS) of up to 32 virtual ports Backward compatible with existing 1000BASE-T networks simplifies the transition to 10GbE.