This is a development board compatible with the Arduino UNO R4 Minima. No accessories are included. It can be used to create custom USB keyboards and left-handed devices. This is a surplus item from a bulk purchase from an online retailer in a certain country. I have tested the unit I set aside for myself and confirmed that the Lチカ (LED blinking program) works correctly. * Please be sure to read my profile before purchasing, as it contains information about discounts, shipping methods, etc.