1、2.5G TRANSMISSION RATE: RTL8125B network card supports 2.5G transmission rate to meet the demand of high speed mesh. 2、STABLE AND RELIABLE: 2.5G gigabit network card adopts RTL8125B chip to ensure the stability and reliability of connection. 3、MULTI PORT DESIGN: 2.5G Base T PCIe network card provides 4 J45 copper ports, which can be connected to multiple devices, more convenient to use. 4、FLEXIBLE ADAPTATION: 4 port gigabit pcie ethernet network card is suitable for different specifications of machines, support X4,X8,X16 slot width. 5、WIDE COMPATIBILITY: RTL8125B network card for Linux, for Win 7 8/Server 2008, for Win 8.1 Server 2012, for Win 10 32/64bit operating system. Item Type: 4 Port 2.5Gbps PCIe Network Card Material: PCB Chip: RTL8125B Cable Interface Type: 4xRJ45 Copper Ports Slot Interface Type: PCI Express2.1(2.5GT/s) Bus Speed and Slot Width: X4,Support,X8,X16 Transmission Rate: 100/1000/2500Mbps 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 Support OS: for Linux , for Win 7, for Win 8/Server 2008, for Win 8.1/Server 2012, for Win 10 32/64bit 1 x Network Card 1 x Driver CD 1 x Short Baffle