Specification:Item Type: 10GB Dual Port SFP PCIe X8 Server Network CardMaterial: PCBChip Model: for Intel 82599ESCable Interface Type: 2xSFP, Fiber InterfaceTransmission Media Type: Support 10Gb Multimode Module, 10Gb Singlemode Module or SFP+ Direct Connect Cable (Fiber Optic)Slot Interface Type: PCI Express2.0(5GT/s)Bus Speed and Slot Width: X8, X8 Compatible, X16.Transfer Rate: 10 GigabitIEEE Network Standard/Network Technology: 10 GBASE-SR1 DGBASE LRNetwork Type: 10 Gigabit EthernetApplicable Field: ServerLED Indicators: 4 LED IndicatorsFull Duplex Half Duplex: Full Duplex/Half Duplex AdaptiveSupported Operating Systems:for Windows Server 2012 R2, for Windows Server 2012, for Windows 8, for WindowsServer 2008 R2, for Windows 7, for Windows Server 2008 SP2, for WindowsSP2, for Windows Server 2003 R2, for Windows Server 2003 SP2, for Linux for Stablefor Kernel version 3.x,2.6,x, for Red Hat Enterprise, for Linux 5,6, for SUSEfor Linux Enterprise Server 10,11, for FreeBSD 9, for VMware ESX/ESXiHow to Use:Plug and play.Package List:1 x 10GB Dual Port SFP PCIe X8 Server Network Card1 x CD ROM Drive1 x Short Baffle2 x Fiber Optic Module