Kuman 6 in 1 Basic Starter Kit for Raspberry Pi Zero and Zero W + Acrylic Black Case+20Pin GPIO Header + Micro USB Cable with On/Off Switch (Kit for Raspberry Pi 3 2 B and Pi B+) Sliced 9 Layers Case Box is compatible Raspberry Pi 3 2 Model B B+with fan design, only support MCU U1 heat sink mounting) 9pcs individual layer and held together with 4 nylon bolts, So it easy Assembly and dis-assembly does not require a tool High-powered Cooling fan with mute function and aluminum heat sinks will reduce the temperature quickly. This can increase the device service's life. 2pcs Micro USB cables, one with on/off switch for Raspberry Pi. No need to restart or reboot your PI. Just press the button to turn your Pi on and off,the other one is for Mini wireless keyboard charging(keyboard inside have a lithium battery need to be charged) Mini wireless keyboard,Connect with 2.4GHz dongle(hide in the back of keyboard),can walk around without wire limited.