PCIE X4 Network Card Supports Multi Mode Single Mode Fiber Modules SFP Fiber Optic Port 1000Mbps Gigabit Ethernet Network Card for Server Item Type: PCIE Network Card Chip Model: for Intel I350AM2 Network Cable Interface Type: 1x SFP Fiber Interface Transmission Media Type: Support Multi Mode Or Single Mode Fiber Optic Module Slot Interface Type: PCI Express2.1(5GT/s) Bus Speed and Slot Width: X4, Support X4, X8, X16 Transmission Rate: 1000Mbps Applicable Network Type: Gigabit Ethernet Applicable Field: Server LED Indicators: 2 LED Indicators Full Duplex Or Half Duplex: Full Duplex and Half Duplex Adaptive Supported OS: for Windows XP Professional SP3, for Windows 7 SP1, for Windows Server 2003 SP2, for Server 2008 SP2, for Server 2008 SP2 (w/Hyper V Role), for Hyper V Server 2008 SP2 (Stand Alone Version), for Server 2008 R2 SP1, for Server 2008 R2 SP1 (w/Hyper V Role), for Hyper V Server 2008 R2 SP1 (Stand Alone Version), for Linux Stable Kernel Version 2.6, for Linux RHEL 5.5, for Linux RHEL 6.0, for Linux SLES 10 SP3, for Linux SLES 11 SP1, for FreeBSD 8.0, for DOS NDIS 2, for DOS ODI, for EFI 1.1, for UEFI 2.1, for VMware ESX 4.03/4.13/5.03, for Xen4.