Features: 1.2.5Gbps Internet : Single port ethernet adapter adopts I225 V chip, the speed is up to 2.5 times, the transmission speed is fast, and the use efficiency is improved. 2.Wide Compatibility: 2.5G gigabit internet card can be seamlessly backward compatible with 2.5Gbps, 1Gbps, 100Mbps, and supports mainstream systems such as for Windows 7/8/10/11,for OS X, etc. 3.Good Heat Dissipation: The single port ethernet adapter is made of aluminum, which can reduce the power loss of the components, lower the temperature, and has good heat dissipation and good stability. 4.PCIE Interface: Gigabit internet card supports the use of motherboards with X1/X4/X8/X16 card slot interfaces, PCIE interface, good conductivity, strong anti oxidation, faster and more stable transmission. 5.Wide Application: The PCIe internet adapter has a thin bracket to meet the needs of different chassis such as desktops, workstations, servers, and mini towers. specification:Item Type: 2.5G Gigabit Internet Card Material: Aluminum Alloy Colour: Black Chip: I225-V Interface: 100/1000Mbps RJ45 Internet Interface, Support Internet Adaptive Internet Standards: IEEE802.3,IEEE802.3u,IEEE802.3ab,IEEE802.3az,IEEE802.3bz Compatible Slot: PCI E 16X/8X/4X/1X Internet Environment: 100/1000/2500Mbps Compatible System: Support for Windows 7/8/10/11,for OS X Mainstream Systems PackageList:1 x2.5GGigabitInternetCard 1 x Thin Bracket 1 x Screwdriver 1 x Screw 1 x Driver CD 1 x User Manual