Power-sourcing Equipment (PSE): The PSE provides power for Powered Devices (PDs) on the Ethernet and supports detection, analysis, and intelligent power management.
PD: PDs are provided with power, such as the wireless AP, portable device charger, POS machine, and camera. According to whether a PD conforms to IEEE standard, PDs are classified into standard and non-standard PDs.
PoE power supply: The PoE power supply provides power for the PoE system. The number of PDs connected to the PSE is limited by power of the PoE power supply. According to whether a PoE power supply is swappable, PoE power supplies are classified into built-in and external power supplies.
TIPS: Make sure POE cable be less than 100m
Via:
IEEE 802.3af & IEEE 802.3at
