1、Custom Programming Keys: This game controller development board features a passive buzzer, a remote lever potentiometer, and six light touch keys that support programming definitions to provide users with a rich operating experience. 2、Multiple Power Supply Modes: The game console development board supports Type C and USB 5V power supply modes, and can also be powered by a 14500 battery(not included) with over charging and over discharging guard, which provides users with a variety of choices and is more convenient and flexible. 3、Perfect Indicator System: This programmable button development board is equipped with a power indicator and a battery status indicator, so that users can always know the operating status of the device. 4、Good Compatibility: This gamepad expansion board has good compatibility and supports for Windows, for OS X, for IOS, for Android and many other operating systems, which is highly applicable and is compatible with the for PXT graphical programming interface, no need to download the compiler can be used, greatly facilitating the programming learning and device applications. 5、Wide Application: This game controller button development board is made of excellent PCB material, which is sturdy and endurable, and can be used for gamepad modification, repair, and so on. 1 x Expansion Board6 x Screws6 x Nuts1 x Manual Item Type: Gamepad Expansion BoardMaterial: PCBPower Supply: Type C, USB 5V or Battery PoweredOnboard Battery Type: 1 x 14500 Battery (Not Included)Indicators: Power Indicator Red LED, Battery Status Indicator Green LEDOnboard Hardware: 1 Passive Buzzer, 1 Joystick Potentiometer, 6 Tactile Buttons (Programmable)System Support: For Windows, For OS X, For iOS, For Android, etc.