This is an accessory for a video game console.
Three cooling fans send cool air to the interior of the Nintendo Switch dock and let the heat escape so it's safe to play for a long time. The cooling fans can be adjusted in two stages depending on the amount of heat inside, so the dock can be used properly. The cooling fan is a silent design, so you don't have to worry about excess noise. You can use it with confidence at nighttime, or anytime! It's easily attached to the back of the main body of the dock, and it can be connected easily by just inserting the USB connector of this product into the USB terminal of the dock body.