Compute Module 4 IO Case is a shell component specially designed for Compute Module 4 IO Board. This component can turn the Compute Module 4 10 Bard+CM4 module into a commercial industrial computer, which can be directly applied in on bulk products. One-key switch, the key switch is combined with CM4 Bootloader and 40PIN GPIO to switch the machine through software, which is different from the traditional way of switching off or turning on the power by hardware. Forcing power off while CM4 is running may corrupt the file system and cause the system to crash. To protect the toilet system, the shell fully fits the structure of the Compute Module 4 IO Board, and all the interfaces are led out of the shell. The metal shell provides a good screen and protection for the system To fix Compute Module 4, there are 4 nut posts at the bottom of the shell, which can lock Compute Module 4 on the shell. If only relying on the 100PIN socket connection between Compute Module4 and Compute Module 4 IO Board, in a vibrating environment Signal double click is very unreliable. Four 1.5mm black nylon washers are used to support Compute Module 4 to prevent the Compute from being locked by screws. When the Module4 module is installed, the PCB will be deformed and the circuit on the PCB will be damaged. 1. System Heat Dissipation: A 12V/60mA Silent Fan Is Installed Directly Above The Compute Module 4 Module. The Fan Is Isolated From The Casing By 4 Silicone Gaskets, Which Greatly Reduces The Amplification Effect Of The Casing On The Fan Noise. 2. The Fan Dissipates Heat For The Entire Compute Module 4 Module, And The Heat Is Discharged Through The Ventilation Holes On The 2 Sides Of The Housing. The Fan Can Reduce The Temperature Of The Cpu By Up To 20 Degrees. 3. Configure The Wifi/Bt Antenna For With Wireless Certified 2.4G/5.8G 4. Configure CR2032 Environmentally Friendly Battery 5. Size: 171.5 x 109.5 x 28.5mm 6. Material: Plastic 7. Color: Black Package Contents: 1 x Expanding Board 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.