【Requested by ttman】This is a requested item. Please refrain from purchasing if you are not the requester. ---- Although the photo shows one, this is a set of two. This is a development board compatible with Arduino UNO R4 Minima. No accessories are included. It can be used to create custom USB keyboards and left-handed devices. I have confirmed that the LED blink (LED lighting program) works correctly at the time of purchase. ※ Please be sure to read my profile before purchasing, as it contains information about discounts and shipping methods. #ArduinoUNO #Arduino #ElectronicWork #Programming #LeftHandedDevice