... Series switch. Although all references to "Power over Ethernet" (PoE), "inline power," and "voice" power supply and line cards ... are synonymous. There are four versions: Cisco prestandard PoE, 802.3af-compliant PoE, 802.3at-compliant PoEP (30W), and Universal POEP ... Every Cisco Catalyst 4500 Series chassis and PoE power supply supports the Cisco prestandard PoE, the IEEE 802.3af standard PoE, and IEEE ...