Fitting this HAT to your Raspberry Pi 3 Model B+ means there is no longer any need to attach a power cable as up to 15 watts of power can be supplied over an Ethernet cable. Perfect for Pi boards deployed in more remote locations.
As well as being a very cheap computer solution housed on a single, credit-card sized board, the Raspberry Pi can easily be added to using Hardware Attached on Top (HAT) add-on boards. There's already a huge range of HATs available, but the Raspberry Pi Foundation launched a new one today that means the Pi requires one less cable.
As Roger Thornton, Principal Hardware Engineer at the Foundation explains, the March 2018 update of the Raspberry Pi, which introduced the Pi 3 Model B+, also added a new Ethernet power feature. It meant instead of connecting both an Ethernet cable for data and a second cable for power, you now only need the Ethernet cable if you have the appropriate HAT.
Today, that Power over Ethernet (PoE) HAT became available for a mere $20. It uses the most common PoE standard (802.3af) making it compatible with as large a selection of network switches that ship with PoE as a feature. The board itself slots on top of the Model B+ (just like a hat!) and still allows the Pi to fit inside a standard Pi case.