This is an RP2040 development board compatible with the Raspberry Pi Pico. Pin headers and a case are included. It can be used for making macro pads, left-handed devices, and custom keyboards. This is a surplus item from a bulk purchase on a certain country's online store. I have tested the individual units I set aside for myself and confirmed that the Lチカ (LED blinking program) works correctly. #RP2040 #RaspberryPi #Arduino #Electronics #Programming #Macropad #LeftHandedDevice #CustomKeyboard ※ Please be sure to read my profile before purchasing, as it contains information about discounts, shipping methods, etc.