Product information Properly manage temperature and protect the SBC with this active Heatsink for RADXA X4 Material Aluminum Alloy Case Input voltage fan 5V Dimensions 97 x 75 x 72 mm Package includes: Radxa Heatsink for X4 Thermally Conductive Silicone Sheet Anti-Slip Round Silicone Pads 4x M2.5x3+3 Copper Piller to prop up Radxa X4 4x CM2.5x3x4 Screws to fix Radxa X4 6x KM2x4x3.5 Screws to fix Heatsink Bracket