Fangrui Product Details Fit For 5 Reserve All Interfaces, More Easier To Use Support Install Cooling Fan For 5 Has Higher Performance And Generates More Heat. Fan Can Prevent Overheating During Operation Suitable For More Usage Scenarios, With Better Heat Dissipation Effect Type: A-1 X Acrylic Case+1 X Screw Pack+1 X Cooling Fan+4 X Heat Sink (copper) Note: For 5 Is Not Included! Red Cable Of Fan Is Connect To 5v Pin On Gpio And Black Cable Is Connected To Gnd Bottom With Hangingvent Holes Tear Up The Film Before Using There Is A Layer Of Protection Film On The Of Acrylic, Please Tear Up It Before Using Material: Acrylic Colour: Transparent Package Contents: 1 X Acrylic Case 1 X Screw Pack 1 X Cooling Fan 4 X Heat Sink (copper, Not Including 5) 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.