General description 2X PCIe to RJ45 Network Card enables high-speed network connectivity with data transfer rates of 10/100/1000 Mbps. This PCI Express Gigabit Ethernet LAN Converter is designed for desktop PCs, providing reliable performance and easy installation. Technical specifications Data transfer rate: 10/100/1000 Mbps Chipset: Realtek RTL8111E External ports: 1 x RJ-45 Ethernet port Host interface: PCI Express (PCI-E) Compliant with PCI Express 1.1 specification Compliant with IEEE802.1P, IEEE802.1Q, IEEE802.3 standards Material: PCB, Metal, Electronic components Color: Black Measurement allowed error: +/- 1-3 cm Compatibility and accessories Supports Windows XP/Vista/7 (32/64-bit), Server 2003 (32/64-bit), and Linux Package Contents: 2 * PCIE to RJ45 Usage Supports high-performance, low CPU utilization PCI-E data bus Supports 10/100Mbps full-duplex/half-duplex mode and 1000Mbps full-duplex mode Supports auto-negotiation technology for automatic detection of network speed and