Features: A new upgraded shell suitable for RPI5, adding a new supporting cooling fan function to the appearance of the previous generation ofRaspberryPi4B. The integrated 2.79CFM fan adopts hydrodynamic bearings, with low noise and long service life A four pinJST connector that can be connected to the for RPi 5, providing temperature controlled cooling. Air is sucked in through a 360 degree slot under the cover, blown through the heat sink connected to the BCM2712 APand then discharged through the connector openings and vents on the base. Fan speed: approx 8000rpm; Power supply through dedicated fan 4Pin pin on the mainboard Specifications: Item: for RPI5 Board Enclosure Input power supply: DC5V Power supply: through the dedicated fan 4Pin pin on the mainboard Fan speed control: pulse width modulation control with tachometer Air flow: approx 2.79CFM Fan speed: approx 8000rpm Shell material: ABS and PC (fan accessories) Size: Mixed as pictures Package Includes: 1PC ABS Case 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.