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.