Features: Robust aluminum alloy material, this case provides excellent durability and protections for RPI5 boards.All ports and slots can be perfectlyfor RPI 5 board. Aluminum case not only provides good heat dissipation, but also provides additional protections for your mainboard. Easy to install, all hardware is included. The fan heat sink is powered on and controlled through the fan connector on the board, ensuring optimal performances and temperature regulation The radiator is controlled by software and remain closed until the temperature rises and cooling is required, providing quiet operation when not needed. Easy access to all ports, all ports and slots of the chassis can be well matchwith the RPI5 board; Specifications: Material： Aluminum Alloy For: RPI5 Board Case size: approx 90x84x34mm/3.54x3.31x1.34in Package Types： A/BC/D A: Aluminum Enclosure B:Aluminum Enclosure+Black Heatsink Cooling Fan C:Aluminum Enclosure+Silver Heatsink Cooling Fan D:Aluminum Enclosure+Copper Heatsink Cooling Fan Package Includes: 1 Set Aluminum Enclosure (excluding RPI5) note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Does not include the RPI5B board