Ever since the concept of higher speed Ethernet emerged, Sun has contributed significant efforts toward the development of the standard, promotion of industry cooperation/product interoperability, and evangelized the merits of the higher speed Ethernet technologies.Sun Fast Ethernet adapter is a singlewide network interface card that offers 10Mbps or 100Mbps network bandwidth over a variety of wiring types (e.g., category 3, 4, 5 unshielded twisted pair (UTP) and Fiber optic cables) via either the on-board RJ45 or MII (Media Independent Interface) connectors.