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).
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.