The Intel X520 and X540 Dual Port 10 GbE adapters for IBM® System x® are powered by reliable and proven 10 Gb Ethernet technology from Intel. These cards offer full line-rate 10 Gbps performance for high-IO intensive applications, and showcase the next generation in 10 GbE networking features for the enterprise network and data center. The Intel X520 adapter provides SFP+ based connectivity options (fiber or DAC cabling). The Intel X540 adapter offers 10GBASE-T connectivity with RJ-45 ports, with compatibility with the existing 1000BASE-T network, simplifying the transition to the 10 Gb Ethernet technology. Both the X520 and X540 are available in either standard PCIe low-profile card form factor or mezzanine card form factor.