Features: brand new and high quality Compact, single chip provides excellent port density for server and embedded designs Extensive operating system support: Linux, free BSD, for Windows, VMware ESX, XEN, Hyper-V Fully integrated Dual GbE MAC- and any combination of Dual PHY/SERDES/SGMII High performance, low power consumption, PCI Expressx 2.0 (5.0 GT/s) 10/100/1000 Ethernet connection IEEE 1588 (pre-standard)/IEEE802.1AS and for time stamp for each packet Supports multiple Tx & Rx queues, virtual machine data queue (VMDq) and 9.5 KB jumbo frames Specifications: Applicable Network: Gigabit Ethernet Main Controller: for Intel(R) NH82580DB Bus type: PCI for Express X1, Rev2.0, 5.0GT/s Media interface: Copper cable, RJ45 Transmission rate: 1000Mbps Size: approx 129X68mm/5.08x2.68in Network Topology: 10BASE-T/ 100BASE-TX/ 1000BASE-T, IEEE 802.1Q VLANs IEEE 802.3z, IEEE 802.3, IEEE 802.3x, IEEE 1588, IEEE 802.3az -Energy Efficient Ethernet (EEE) Management function: IPMI transfer through SMBus or NC-SI, iSCSI boot, WoL, PXE remote boot, VLAN filtering Operating system: FreeBSD, Linux, VMWare ESXi, Win 7/ Server 2012/ Server 2008/ Win 8/Win 8.1/Server 2016/Win 10 Package Includes: 1 x Dual-port Gigabit Server Network Card 1 x Low-profile Bracket note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.