This is metal case with super mute cooling fan kit , it is very easy to install and a perfect choice for X820 SSD/HDD storage board user.
Support super mute cooling fan;
Note: Please remove the Jumber cap when you use the power swtich to control the power of raspberry pi and X820 storage board.
1 x Metal Case(with 4 pieces of M3*4 screws)
1 x Power Control Switch
1 x Mini Fan(with 4 pieces of screws)