H!Fiber 10Gb SFP+ NIC Dual Port PCI Express X8 BCM57810S Windows/Linux/VMwareNIC Controller: 10Gb Network Card equipped with original Broadcom BCM57810S Controller, which supports Quality-of-Service (QoS) technology to streamline your online experience and ensure stability,Dual SFP+ PCI-E NIC: 10Gb Dual SFP+ Ports support 10G SFP+ module/ DAC /AOC Cable, offer a dramatic 10x speed increase over standard Gigabit adapters, reaching speeds of up to 10 Gbps; (Also compatible with 1 Gbps.) PCI Express 2.0. 5.0 G T/s x 8 Lane, compatible with PCIE X8, X16 Slot,Widely Compatible OS: Windows 7/8/10, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, poundsProductdimensions6.0 x 1.0 x 8.8 PackVisit our store for more great deals!Thank you!