CHARACTERISTICS External compatibility: Designed specifically for HP devices, the adapter supports 90W, 130W, 150W, 180W and 240W power supplies. Universal connectivity: Convert the 7.4mm to 4.5mm connector, allowing the use of various power supplies on HP devices. Various Levels of Power: Suitable for power supply with different powers, ensuring a flexible solution for your power supply needs. Cable Included: Complete with cable, the adapter offers a ready-to-use solution to simplify your setup. Quality and Safety: Built with high quality materials, the adapter ensures a secure and reliable connection, avoiding damage to your equipment. Easy to Use: Simply connect the adapter to your existing power supply, then connect the converted connector to the HP device for quick installation. Universal HP compatibility: It works with a wide range of HP devices, offering a practical solution for users with different configurations. 7.4 mm to 4.5 DC Adapter Simply connect a dongle end to the existing power adapter of HP and connect the other end to the battery. You do not need to use separate power cables: you can upgrade the 7.4 mm power adapter to a 4.5 mm power adapter.