The 665249-B21-ENC is a PCIEx8 network interface card that operates at 10Gbps and is functionally compatible and comparible to HP 665249-B21. The 665249-B21-ENC utilizes a Intel 82599 chipset with 2 SFP+ ports. ENET Solutions offers a full line of OEM compatible and standard network interface cards (NIC) to satisfy the needs of any connection speed from 1Gbps through 40Gbps. ENET Network Interface Cards are fully compliant with IEEE 802 standards and will enable seamless integration to your local area network (LAN). All ENET Network Interface Cards are individually tested in our facility for functionality prior to shipping and come with a 3-year replacement warranty.