This is an Intel I350F2 comparable Gigabit Ethernet PCIe x4 network interface card with 2 included SX SFPs that comply with IEEE 802.3 standards. It is based on an Intel 82576 chipset and is compatible with Windows and Unix-like operating systems. Providing 1Gbs of network speed, it fully supports high-end servers and a variety of networking applications. In addition, this card supports high level VLAN filtering. The dual open SFP ports allows users to choose from a range of SFP transceivers to accommodate multi-mode (MMF) and single-mode (SMF) fiber, granting customizable reach. This product includes both half-height and full-height brackets. All of our network interface cards are 100% compliant, and offer a cost effective solution for all of your network upgrade needs. FeaturesIntel Comparable 1GBS Dual Open SFP Port Pcie X4 Network Interface CardSpecificationsAdditional Information: With 2 1000Base-SX SFP transceiversBus Type: PCIEBus Width: PCIEx4Chipset: Intel 82576Compatible OEM: IntelCompatible OS: Windows Server 2012, Windows 7 (32 and 64 bit), Windows Server 2008 R2, Windows Small Business Server 2007, Windows Server 2008 Final (32 and 64 bit), Windows Server 2003 Final (32 and 64 bit), Windows 8 (32 and 64 bit), Linux Kernel 2.4. x, 2.6. x, and 3. x, FreeBSD 7. x or greater, Windows Vista Final (32 and 64 bit), Windows XP (and Pro) (32 and 64 bit), Netware 6.5Compatible With OEM Part Number: I350F2Data Protocol: EthernetData Rate: 1GbsExternal Connector: SFPMedia Type: MMFNumber of Ports: 2 PortsReach: 550mUNSPSC Code: 43201411Whats In The Box: 1x network interface card, 2x transceiverWeight: 0.5 lbs