This case has the Raspberry and an integrated USB hub, the board takes power source from the same hub and uses it to expand available ports (overall 5+1 ports are free), Power supply is provided from a 5V 1.5A PSU, enough to serve multiple peripherals along with the Raspi. Integrated ethernet connection allows it to connect to the web and usb ports are commonly used for usb storage and a serial to usb adapter (for the serial console).
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.