siig s dp gigabit ethernet pcie adds one high-speed gigabit ethernet port to pci express enabled desktop computers and workstations. it supports up to 1000mb/s data transfer rate, auto-negotiation and full duplex mode to enhance your network s performance and reliability. this high quality, dual-profile ethernet adapter will enhance your networking performance from any desktop computer or workstation with 10/100 ethernet port or without networking capabilities. the dp gigabit ethernet pcie is fcc ce regulatory approved and rohs-compliant. it is fully compatible with a wide variety of windows and mac operating systems features: 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 easy plug-n-play installation works in any available pci express slot dual profile design to work with standard height and low profile chassis chipset: rtl8111e