2 Port 1000M PCIe Network Adapter Card NIC PCI Express 1G Gigabit Ethernet Lan Card Can reach the speed up to 10/100/1000Mbps Intel 82575EB chipset with 2* 10/100/1000Mbps Copper ports Come with Low profile bracket For PCI-e Express x1 Slot,Compatible with PCI-e x4,x8,x16 slots Support for windows7, 8, 10, for LINUX Network Standard: EEE8021P, IEE8021Q, IEE8022, IEE802.3ac, EE8023az, IEEE802.3x, IEEE802, 3ad