- The USB to DC5V charging cable is designed to power your 5V electronic devices efficiently and reliably. It includes multiple connector options: 5.5x2.1mm, 5.5x2.5mm, 4.0x1.7mm, 2.5x0.7mm, and 3.5x1.35mm, ensuring compatibility with a wide range of devices. - This cable features a polarity-specific design (inner positive, outer negative) to guarantee a stable connection, supporting charging currents of up to 5V3A. Choose from six different lengths, ranging from 30cm to 300cm, to fit your unique setup and requirements. - Perfect for anyone needing a dependable power source for various gadgets, this cable is suitable for smartphones, speakers, desk lamps, facial cleansers, electric toothbrushes, and fans. - Ideal for both home and office use, the USB to DC5V power cord keeps your essential devices operational, providing peace of mind and convenience. - Use it to charge your smartphone while working at your desk, power a lamp in your living room, or keep your electric toothbrush ready for use. This cable meets the demands of daily life, making it an essential accessory for your electronic devices.