The NIC NPC820M4D6XATRF is a Gigabit Ethernet Controller with a PCI Express x4 interface. It has a high-performance 4 ports 1000BASE-T/100BASE-TX Ethernet MAC that is ideal for network interface card (NIC) application. This is a small form factor pluggable (SFP) module that can be used to add four Ethernet ports to a system. It offers advanced features such as hardware IPv4/IPv6 checksum offload, hardware receive side scaling (RSS), hardware VLAN filtering, IEEE 802.1Q tagged VLAN, 802.3az Energy Efficient Ethernet (EEE) support, and jumbo frame up to 9570 bytes. It also supports up to 8 virtual functions that can be used to maximize network throughput, eliminate performance bottlenecks and improve system efficiency.