1、FAST TRANSMISSION RATE: PCIe network card supports 100/1000Mbps transmission rate to meet the needs of high speed network. 2、RELIABILITY CONNECTION: 4 port pcie network card adopts for Intel 82571 chip to ensure the stability and reliability of the connection. 3、4 RJ45 PORTS: Gigabit PCIe ethernet network card provides 4 RJ45 copper ports to connect multiple devices. 4、FLEXIBLE ADAPTATION: Ethernet PCI Express network card supports X1,X4,X8,X16 slot width, suitable for different specifications of the machine. 5、WIDE COMPATIBILITY: PCIe network card supports a variety of operating systems and network types, such as for Windows 7/8/10, for Centos/RHEL 6/7/8, for Ubuntu 16/18/19/20, for Debian 9/10/11,for FreeBSD 10/11/12 , for Vmware Esxi 5/6/7, for SLSE 11/12 and so on. Item Type: Quad Port PCIe Gigabit Ethernet Server Adapter Material: PCB Chip: for intel 82571 Cable Interface Type: 4xRJ45 Copper Ports Slot Interface Type: PCI Express2.1(2.5GT/s) Bus Speed and Slot Width: X1,support X1,X4,X8,X16 Transmission Rate: 100/1000Mbps IEEE Network Standards/Network Technologies: 10BASE T,100BASE TX,1000BASE T Applicable Network Type: Gigabit Ethernet LED Indicators: 8 LED Indicators Full Duplex/Half Duplex: Full Duplex/Half Duplex Adaptive Supported OS: for Windows 7/8/10, for Centos/RHEL 6/7/8, for Ubuntu 16/18/19/20, for Debian 9/10/11, for FreeBSD 10/11/12, for Vmware Esxi 5/6/7, for SLSE 11/12 1 x Network Card 1 x CD Driver 1 x Short Baffle