According to the invention, an Ethernet system and method of using an Ethernet system is provided including a network side device (a hub/switch/concentrator), and a plurality of end devices (either a standard end device powered locally or a system powered device), connected to the hub/switch. The system...http://www.google.de/patents/US6535983?utm_source=gb-gplus-sharePatent US6535983 - System and method for signaling and detecting request for power over ethernet
