YUEYOU RJ45 10/100/1000Mbps Gigabit Internal PCI Express Network Adapter PCI-E x1 Ethernet Card for Microsoft Windows 32-bit 64-bit Device Type: PCIe Adapter,Interface: RJ45 High-performing,Data Rate(s) : 10,100,1000 Mbps Support half and full duplex ,auto-regulation, Supports Microsoft Windows both 32-bit 64-bit Operating Systems Standards and Protocols: IEEE 802.1p,IEEE 802.1Q,IEEE 802.2,IEEE 802.3ac ,IEEE 802.3az ,IEEE 802.3x ,IEEE 802.3z ,IEEE 802.3ad IEEE Standard/Network Topology: 10BASE, 100BASE-TX, 1000BASE-T Category 5E