What Is PoE++ and How Much Power Does It Deliver?

Power over Ethernet has expanded steadily since its introduction. Each revision raised the per-port power budget and broadened the devices it can support.

For production-line and building networks, the key question is not the peak value but the total budget across all ports.

• The original standard delivers around 15W per port.
• Later revisions raised this to 30W and then up to 90W.
• Always compare the switch total budget, not just the per-port figure.