No software required. As easy as plug and playDescription: This module plugs directly into the USB port of your PC. Flash sound module with 4 button trigger with multiple sound files per button.Features:Uses a micro USB port to directly plug into the USB port of PC for easy use of the sound module.Built-in an 8MB flash memory, which is able to store a total of about 8 minutes long MP3 files of 128KbpsSupports Windows 10 or earlier, and Mac operating systemsSupport audio format: MP3 and WAVAble to play multiple audio files on per button.Built-in a class D 3Watts amplifier IC and a 3.5mm audioDirectly drives a 0.5Watts to 3Watts (4ohms to 8ohms) speakerVolume is adjustable through adjusting the blue potentiometer4-Key Operations with 7 Triggering Modes0: Short press the button to start playing, and during playing, if you press the button again, the playback will be interruptible and it will play from the beginning.1: Press the button and hold to start playing repeatedly, and when the button is released the board stops playing.2: Short press the button to start playing, and during playing, if you press the button again, the playback will be NOT interruptible.3: Short press the button to start playing repeatedly and press the button again to stop.4: Press the button and hold to start playing once, and when the sound file goes to the end, the board stops playing.5: Interruptible and switches to the next sound file.6: UninterruptibleBuilt-in 3.5mm headphone outputWorking voltage: 3.7-5V DCWorking current: ?100mA (1Watt 8ohms speaker)Standby current: 0?ASuitable to be powered with 3 x AA, 3 x AAA batteries or a Li-ion batteryPCB size: 50mm x 34mmHeight of the module: 14mm