Which statement regarding PoE devices is true?

The statement that PoE devices will draw only the power they need is accurate because of how Power over Ethernet (PoE) technology is designed to function. PoE allows network cables to carry electrical power along with data, enabling devices like IP cameras, VoIP phones, and wireless access points to operate without requiring a separate power source.

According to the various PoE standards—including IEEE 802.3af, 802.3at, and 802.3bt—each device communicates with the Power Sourcing Equipment (PSE), such as a PoE switch, to negotiate the amount of power it requires for operation. This ensures that the device only consumes the necessary wattage for its operation, which can lead to improved energy efficiency and reduced waste. As a result, if a device only needs 5W to function properly, that is all it will draw, rather than being limited to a fixed amount regardless of its actual power requirement.

This aspect of PoE technology allows for a more dynamic and efficient distribution of power among multiple devices connected to the same switch.