Features: USB 5V to 1.5V 3V 4.5V 6V 7.5V 9V 12V 5.5x2.1mm adjustable voltages cable with LED display suitable for toy game LED lamp and other 1.5V-12V devices 6W output. The module cable is an adjustable step-up/down power supply module with 2-digit LED digital tube display. Displays output voltages in real-time. Rotate potentiometer to adjust output voltages. 1.30V-12V wide voltage output, supports boost, with on/off switching. 1.30V-5V output 3W, 6V-12V output 6W. 130cm cable, this cable can replace 9V AA+AAA battery, cut the 5.5x2.1mm connector and connect to your devices. Wide application: mainly used to adjust the brightness of single color LED lights, such as 3528, 5050, 5630 strip LED lights for urban lighting, holiday atmosphere, fan, car lights, car fan and so on. Specifications: USB input voltage: 5V 2A-3A 5.5x2.1mm output: 1.30V-12V 0.5A Material: plastic Cable length: 130cm/51.1in Quantity: 1 piece Package includes: 1 x USB to 1.30V-12V 5.5x2.1mm cable Note: Please allow 1mm error due to manual measurement. Due to differences between monitors, the picture may not reflect the actual item color.