P1771S Very good looking board. The back as well as its front are very nice printed. The thin paper cardboard box matches the circuit board colors perfect and has openings for the usb cable and the buzzer's on / off switch.It operates as an arduino uno with 10 leds, 2 rgb leds and a buzzer onboard. 10 of your leds will be bound to pins 2 to pin 11. This pins will lit up regardless of what you connect to the pin themselfs, which can help see if a signal is active. The 2 RGB leds on pin 13 and pin 12 can recieve a rgb color and a brightness for that setting. They're really bright when fully lit. The rgb leds can be called as if they are led strips. The NeoPixel library code is included in the examples at Jenny's github page. There is also the FastLED library you can download, that I can confirm will work too. The piezo buzzer on pin 8 will make that old school noise a buzzer makes. Great board to test out stuff before even connecting a breadboard to it. Also its onboard features helps when you're testing out sensors. Not to mention to board looks really great.Can strongly recommend for new