SIIG Dual Profile GigaLAN PCIe Adapter CN-GP1021-S3 Adds a high-speed Gigabit Ethernet port into PCI Express (PCIe) enabled computers Supports crossover detection & auto-correction Supports full duplex mode that doubles the network connection speed Supports Wake On LAN (WOL) power management Checksum and Segmentation Task-offload reduce CPU workloads for enhanced system response and network scalability Automatic MDI/MDIX crossover at all speeds Supports Flow Control, Layer 2 Priority Queuing, VLAN Tang and Jumbo Frames LEDs indicate the Link/Activity status and 10/100/1000 Mbps