The Realtek RTL8125 chipset, compliant with IEEE 802.3az and IEEE 802.3u supports the PCIe 2.1 interface. It provides up to a 250% increase in data rate and requires no changes to existing cable infrastructure. Compatible with the IEEE 802.3u specification for 10/100Mbps Ethernet, the IEEE 802. specification for 1000Mbps Ethernet and the IEEE 802.3bz specification for 2500Mbps Ethernet. It supports an auxiliary power auto-detect function and will auto-configure related bits of the PCI power management registers in PCI configuration space. Support Wake-On-LAN and RealWow Technology (remote ), remotely power on/off your computer with , good for centralized management This port 2.5Gbps PCIe network card adds four Ethernet port to your Server or Desktop computer and provides Multi-Gigabit Ethernet access to your network at four speeds: 2.5bps, 1G, 100Mbps and 10Mbps. Color: Material: PC+metal Package Contents: 1 x Gigabit network card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.