1. Suitable for Raspberry Pi Glare Cooling Expansion Board, 2. Applicable for Raspberry Pi 4B/3B+/3B 3. Using Active Heat Dissipation Installation Method, The Heat Dissipation Effect Is Better Than Passive Heat Dissipation 4. With Lde Ambient Light Function 5. Dual Fans Type: Expansion Board Model: for Raspberry PI Heat Sink Fan Expansion Board Function: With Lde Ambient Light Usage: for Raspberry PI Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:PCB Package Contents: 1 * Dual Fan Module 1 Set * Screw Mounting Accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.