4 Ports 1000M PCI-e Express Network Adapter Controller Card PCI Express 4 Ports RJ45 Gigabit Ethernet Lan Card With Intel 82575 Chipset 4 port 10/100/1000M Network Interface Lan Card Adapter Quad 1000M RJ45 Port Gigabit Ethernet LAN Card Controller IEEE standards: IEEE 802.3 / 10BASE-T, 100BASE-TX, 1000BASE-T Interrupt Levels: INTA, INTB, INTC, INTD; MSI; MSI - X Management by the INTEL PROSet utility Advanced features: AFT, SFT, ALB, Teaming support Stream support, autonegotiation Compatible with Desktop or Server on port PCIe x1 (or above)