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 and backed by SIIG's limited 5-year warranty.