What type of devices can Power over Ethernet (PoE) power?

The correct choice highlights that Power over Ethernet (PoE) is specifically designed to power devices that are compatible with PoE standards. This includes devices that have been built to accept power over the Ethernet connection, such as VoIP phones, wireless access points, and IP cameras. These devices often have integrated circuits that allow them to draw power from the Ethernet cable, making them dependent on PoE technology for operation, particularly in installations where providing separate power sources would be challenging or impractical.

Devices that require PoE typically adhere to standards like IEEE 802.3af, 802.3at, or 802.3bt, which ensure that they can negotiate the power requirements with the network switch. This enables efficient power distribution while simplifying the cabling needs in various installations.

The other options generally lack precision in defining the scope of PoE. While it is true that PoE can power various types of devices, the specific focus on devices that require PoE emphasizes the subset of devices specially designed to utilize this technology. This distinction is crucial for understanding the practical applications of PoE in real-world scenarios, ensuring that only devices that are compatible with the required power specifications and protocols can take advantage of this functionality.