The powerful yet compact (2 RU) Summit 300-48 is equipped with 48 10/100 Ethernet ports and four copper and GBIC ports. With a nonblocking backplane, the Summit 300-48 performs at full wire speed on every port. Modular, hot-swappable load-sharing power supplies, as well as integrated 802.3af Power over Ethernet (PoE), give the Summit 300-48 the reliability required for enterprise-class services, including voice-over-IP (VoIP) and other PoE applications.