This is an official active cooler with a heatsink and a cool fan integrated for Raspberry Pi 5 designed by Raspberry Pi Team.
As we understand, Raspberry Pi 5 computers deliver great performance and of course, more power will generate more heat for all CPUs. This is especially true for Raspberry Pi 5 as it is the most powerful Raspberry Pi board so far. So it needs good heat management, hence this heatsink and active cooler. The active color will help to dissipate the heat.
It comes with 3 thermal pads protected by a protective sheet. The thermal pads are for better thermal conductivity. They are particularly for CPU, RAM IC, and Wi-Fi shield can on Raspberry Pi 5 board.
The heatsink and fan come in one piece and mounting is through snap-and-fit on dedicated holes on the Raspberry Pi 5 board. The fan on the heatsink comes with 4-pin connector for you to connect to the dedicated fan connector.