A local area network ("LAN") controller operable in an IEEE 802.3u network and an IEEE 802.12 network. A common physical connector is used for both standards, attached to an attachment medium such as a card. An 802.3u circuit is attached to the card, implementing the following 802.3u functions:...http://www.google.es/patents/US5784573?utm_source=gb-gplus-sharePatente US5784573 - Multi-protocol local area network controller
