Features: brand new and high quality Total film model: for Intel 82599ESTypical network cable interface: 2xSFP+ optical fiber interface Typical transmission medium: support 10 Gigabit multi-mode module, 10 Gigabit single-mode module point SFP+ direct connectionTypical plug-in interface: PCI for Express 2.0 (5GT/s) Total cheap cover skin and slot wide skin: X8. for X8, X16.Transmission rate: 10GigabitIEEE network standard/network technology: 10GBASE-SR, 10GBASE-LR Applicable same network type: 10 Gigabit EthernetLED indicator: 4 LED indicatorsFull duplex/half duplex: full duplex/half duplex automatic communication Operating Systems:Windows Server 2012 R2, for Windows Server 2012, for Windows 8,WindowsServer 2008 R2,Windows7,for Windows Server 2008SP2, for Windows VistaxsP2, for Windows Server 2003 R2, WindowsServer 2003 SP2, Linux Stable Kernel version 3.x,2.6,x,Red Hat Enterprise Linux5,6,SUSE,Linux EnterpriseServer 10,11,FreeBSD 9,,VMware ESX/ESXi Specifications: Material:PCB Size:As Picture Shown Color:Green Package Includes: 1x Ethernet Converged Network Adapter X520-DA2 note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.