For X520SR1 10G 82599EN SFP+ Ethernet Converged Network Adapter E10G41BFSR Features: 1. Applicable to a variety of places, as you like (Internet cafe, monitoring, data server, etc.). 2. For 82599EN master chip. 3. Support multiple systems: for Win VISTA/7/8/10, etc. 4. Single port 10Gbps SFP network card, high speed network, fully meet your needs. 5. Gold-plated PCI-E interface, stable and sturdy. Specification: Interface: SFP+ * 1 Bus Type: PCI-E X8 Master chip Chipset: for 82599EN Transmission Rate: 10000Mbps Network Type: 10-Gigabit Fiber Ethernet Transmission distance: double mode: 62.5um 220m, 50um 550m. Boot Rom: Support BOOT ROM LEDs Indicators: 4 x led indicators for link/Activity Mode status Work for: Server, Workstation Network Standard: IEEE 802.1p, IEEE 802.1Q, IEEE 802.2, IEEE 802.3ac, IEEE 802.3az, IEEE 802.3x, IEEE 802.3z, IEEE 802.3ad Management Features: PXE remote boot, ISCSI boot, VLAN filtering, FCOE, ROS, ESXI Support system: For Win VISTA/7/8/10 (32 & 64bit), SCO UnixWare 7.x, Open Unix 8.0, Novell ODI, Novell Netware, SUSE for Linux Enterprise Server 9.0, Red Hat Enterprise for Linux 4.0, for Linux, FreeBSD, for DOS, VMWare ESX System Requirements: For Win Professional SP3, Vista SP2, for Win 7 SP1, for Win Server 2003 SP2, Server 2008 SP2, Server 2008 SP2 Core, Server 2008 SP2 (w/Hyper-V role), Hyper-V Server 2008 SP2 (stand -alone version), Server 2008 R2 SP1, Server 2008 R2 SP1 Core, Server 2008 R2 SP1 (w/Hyper-V role), Hyper-V Server 2008 R2 SP1 (stand-alone version), Linux* Stable Kernel version 2.6, for Linux RHEL 5.5, for Linux RHEL 6.0, inux SLES 10 SP3, for Linux SLES 11 SP1, FreeBSD 8.0, DOS NDIS 2, DOS ODI, EFI 1.1, uEFI 2.1, VMware ESX 4.03 /4.13/ 5.03, Xen4. Product size: about 150*120*20mm/5.91*4.72*0.79in Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.