This Dell Intel X520-T2 Dual Port 10Gb Network Adapter ensures priority performance on each port, which improves server throughput and rack density. Add 10GB Ethernet to your compatible server with the Dell JM42W network card. The Dell JM42W has two 10GBase-T copper ports. Dell JM42W 10GB NICs have a PCIe (express) interface. The card supports most network operating systems and has iSCSI boot support. An open PCIe slot in a compatible system is required to install and use the Dell JM42W X520-T2 10GB dual port NIC.