Specification: Compliant with PCIE Express Revision 3.0 and downstream with PCI Express Reivison2.0Supports line rate of 8.0GT/s and 5.0GT/s per Supports Gen 3x4 or Gen 2x4Supports communication and management functionIntegrated Aquantia AQrate PHY featuring NBASE-T technologyColor: As ShownMaterial: plastic+metalSupports PHY specifications with 10GBASE-T/5GBASE-T/2.5GBASE-T/1000BASE-T /100BASE-T.On-chip high resolution cable analyzer for advanced cable diagnosticsEnergy Efficient Ethernet(EEE) SupportSupports IEEE1588v2 Precision Time ProtocolSupport send offload, Receive Side Scaling(RSS),Direct Cache Access() and Headerchecksum for increased network performance and lower host CPU utilizationSupports IPv4,IPv6 and IPv6/UDP checksum offloadSupports Jumbo frame(up to 16kbytes)Quality of Service()Supports up to eight traffic classes and Data Center Bridging()Support Operation Systems:WinddowsWin7/Win8/Win8.1/Win10/ Server2012 / Server2016/ Linux/ OSSystem RequirementslFreeBSD, Linux , ESXi, Win7/ Win-server2012/ Win-server2008/ Win8/Win8.1/Win-server2016/win10/ OSOne available PCI Express x4 slotPackage Contents:1 x server network card1 x CD driver1 x short bracket1 x English ManualOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.