The Cisco® Catalyst® 4500E Series platform offers a variety of choices in power supplies to enable the desired Power over Ethernet (PoE) scale and chassis configuration.
PoE has four versions: Cisco Catalyst 4500 Prestandard PoE (Prestandard PoE), 802.3af-compliant PoE (15W), 802.3at-compliant PoE Plus (PoE+) (30W), and Universal PoE (UPOE) (60W). Every Cisco Catalyst 4500 Series chassis and PoE power supply supports the Cisco Catalyst 4500 Prestandard PoE, the IEEE 802.3af standard PoE, and IEEE 802.3at-compliant PoEP power implementation, helping ensure backward compatibility with existing Cisco powered devices.
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