The Raspberry Pi Power over Ethernet HAT is a small accessory for the Raspberry Pi computer. It can only be used with the Raspberry Pi 4 Model B (launched June 2019) and the Raspberry Pi 3 Model B+ (launched March 2018). The PoE HAT allows you to power your Raspberry Pi using Power over Ethernet–enabled networks; for this product to be used, the network it is connected to needs to have power-sourcing equipment installed. Supplied with this product: * Raspberry Pi PoE HAT * Mechanical spacersOther hardware needed: * A Raspberry Pi 4 Model B or Raspberry Pi 3 Model B+ * An Ethernet cable * Power-sourcing equipment for a 802.3af Power over Ethernet network