Welcome to the store! [Cooling Fan for Switch OLED] - The cooling fan is compatible with the Nintendo Switch Dock Set (OLED Model HEG-007). Simply remove the back cover and attach this external cooler to your new dock. The built-in turbo cooling fan blows cool air into the Switch console, preventing overheating. [3 Working Mode Options] - Click the button to select a suitable speed: High / 3000 RPM, Medium / 2600 RPM, and Low / 2000 RPM. The fan blades glow with a vibrant blue light. The alternating brightness indicates which gear is in. The heat dissipation back cover can be turned off during winter days. [Designed for the New Dock] - Exclusively designed for the 2021 new dock. Sleek profile that seamlessly fits the Switch Dock and works smoothly. Powered by the external USB port on the Dock, no need for an extra power adapter. Two color options: black and white. (Please note: This edition only works with the OLED model, it is not compatible with the old dock model HAC-007.) Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!