The SK-9E21D is based on the new serial transmission technology PCI Express. The flexible Gigabit Ethernet adapter supports 10/100/1000Base-T Ethernet standards and a wide variety of operating system platforms such as Windows, Solaris, Linux, NetWare and HP-UX. The SK-9E21D adapter complies with PCI Express 1.0a and can operate in x4, x8 and x16 slots. Additionally it includes many important features like PXE support, ASF functionality, parity monitoring on all data paths, TCP segmentation, jumbo frame support. Wake on LAN (WOL) and Multicast support or Hot Plug.