Features: 1.This mini computer aluminum alloy case possess cleanly power shutdown 2.Come with built-in fan to realize active and passive coolingdesigned for Raspberry Pi4 3.Support controllable fan speed, and the shell make neat cable management come true 4.Easy installation without special requirementaccess to GPIO pins 5.Adopt high quality anti?corrosion aluminum alloy, which is light material and high strength specification:Item Type: For Raspberry Pi 4B Case Compatibility: For Raspberry Pi4 Material: Aluminum alloy shell PackageList:1 x User Manual1 x For Raspberry Pi Shell (2pcs)1 Pack of Accessories1 x Video and Audio Adapter Board NotePlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.