Features: 1. The Official New Upgraded Shell Of for 5 Adds A New Function To Support The Cooling Fan In The Appearance Of The Previous Generation 4b.2. Integrated 2.79 (Maximum) Cfm Fan Uses Hydrodynamic Bearings For Low Noise And Long Service Life.3. Connects To 5'S Four-Pin Jst Connector To Provide Temperature-Controlled Cooling.4. Air Is Sucked In Through The 360-Degree Slot Under The Cover And Blown Through The Heat Sink Connected To The Bcm2712ap.5. Exhaust Through The Connector Openings And Vents In The Base.Description:1. Input Power Supply: 5V DC Powered Through The Dedicated Fan 4pin Pin On The Motherboard2. Fan Speed Control: Pulse Width Modulation Control With Tachometer3. Maximum Airflow: 2.79CFM4. Maximum Fan Speed: 8000RPM +/- 15%5. Material:ABS+PCColor: red and whitePackage Contents:1 x Red And White Shell1 x Cooling Fan1 x Heat Sink4 x Gaskets1 x English ManualNote:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The UseOnly 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.