Description 1. Versatile Power Solution: Seamlessly convert your standard 5V USB power source into various DC output voltages, including 5V, 9V, and 12V, ensuring your essential devices like routers, modems, and USB speakers remain powered even during outages by utilizing a power bank or any USB port. 2. Quality Build & Broad Compatibility: Constructed with a premium PVC outer jacket, pure copper wire core, and robust alloy interfaces for reliable performance. The cable length is approximately 100 cm (39.37 inches), and it features 8 interchangeable DC adapter tips with dimensions: 6.0*4.0mm, 6.3*3.0mm, 5.5*2.5mm, 5.5*2.1mm, 5.5*1.7mm, 4.8*1.7mm, 4.0*1.7mm, and 3.5*1.35mm. 3. Intelligent Charging Indicator: Monitor your device's charging status at a glance with the built-in LED indicator; a red light signifies active charging, while a green light confirms your device is full powered. **Additionally, both output voltage and DC connector specifications are customizable to perfectly match your unique device requirements.** 4. Enhanced Reliability & Performance: Experience stable power transmission thanks to thickened copper wire cores and a fortified insulation layer. The cable features a reinforced tail and nickel-plated interfaces, rigorously tested for bending, pulling, and plugging, ensuring consistent operation and long-term functionality. 5. Broad Application: This boost cable and adapter kit serves as an indispensable accessory for a multitude of small electronic devices. Effortlessly power USB desk lamps, portable fans, Bluetooth speakers, MP3 players, and cooling pads, providing a flexible and convenient energy source wherever you go. Package list 1 x USB DC Boost Cable with 8-Piece Adapter Set