EX4300 switch includes high availability (HA) features such as redundant, hot-swappable internal power supplies and field-replaceable fans to ensure maximum uptime. In addition, Power over Ethernet (PoE)-enabled EX4300 switch offers standardsbased 802.3at PoE+ for delivering up to 30 watts on all ports for supporting high-density IP telephony and 802.11n wireless access point deployments.