Features 1、FAST TRANSFER: Gigabit ethernet server adapter supports PCI Express 2.0 (5GTs) Specification for servers and PCs. 2、STABLE CONNECTION: Server network card supports switching, polarity and skew correction, cross detection and auto correction to ensure stable connection. 3、LOW POWER CONSUMPTION: 4 port gigabit server network card supports power off, power down, PHY disable mode, energy saving and environmental protection. 4、MULTI SYSTEM COMPATIBILITY: Ethernet server adapter is suitable for Windows, for Linux, for OS X and other operating systems. 5、HIGH SPEED NETWORK: Quad port pcie gigabit ethernet server adapter supports full duplex/half duplex adaptive. Specification Item Type: 4 Port Gigabit Ethernet PCIe X1 Network Interface Card Material: PCB Product Model: NA8111 T4 Chip Model: RTL8111 Cable Interface Type: 4xRJ45 Interface Transmission Rate: 1 Gigabit IEEE Network Standard/Network Technology: 1000BASE T Applicable Network Type: Gigabit Ethernet Full Duplex Half Duplex: Full Duplex/Half Duplex Adaptive Supported Operating Systems: for Windows ME,98SE, 2000, XP, for WIN7, for WIN8, for WIN10 32 64 bit for Windows Server 2003, 2008 and 2012 32 64 bit for Linux, for AYOS, for OS X, for FREEBSD, for DOS, for ROS Package List 1 x Network Card 1 x Short Baffle