Intel® 82576 Gigabit Ethernet Connection is a high-performance, Dual-Port Gigabit Network Connectivity for multi-core and virtualized platforms.
The Intel® 82576 Gigabit Ethernet Controller is a compact component with two fully integrated Gigabit Ethernet Media Access Control (MAC) and physical layer (PHY) ports. This device uses the PCI Express 2.0 (2.5 GT/s) [x4, x2, and x1] interface. The Intel 82576 Gigabit Ethernet Controller provides two IEEE 802.3 Ethernet interfaces for 1000BASE-T, 100BASE-TX, and 10BASE-T applications. Both ports also integrate a Serializer Deserializer (SerDes) interface to support 1000BASE-SX/LX/BX (optical fiber), Gigabit Ethernet backplane applications and external PHYs connected either on board or via SFP connectors using SGMII signaling. Intel 82576 Gigabit Ethernet Controller provides hardware assists for auto sensing and switching between Copper and SerDes/SGMII interfaces.
The Intel 82576 Gigabit Ethernet Controller provides high performance dual-port gigabit connectivity in a multi-core platform as well as in a virtualized platform. In a multi-core platform it supports different technologies including Intel® QuickData Technology, MSI-X, Low Latency Interrupts and others, that help accelerate the data across the platform thereby improving application response times. In a virtualized environment it supports Intel® virtualization Technology for Connectivity that helps improve the I/O performance by reducing the I/O overhead on a virtualized platform.