The Intel(R) Ethernet Server Adapter X520-T2 is a network interface card (NIC) designed for high-performance server environments, supporting Ethernet speeds up to 10 Gbps. It's typically used for connecting servers or high-performance systems to a network. The X520-T2 specifically features dual 10GbE ports, and it's commonly used in data centers, workstations, and other enterprise-level applications.

The Windows driver for this adapter allows your Windows operating system to communicate with the hardware and take full advantage of its capabilities. Without the appropriate driver, the operating system may not recognize the network card or may not be able to utilize its full performance potential.