Super Power Supply DC Laptop Car Adapter Charger Cord with USB charging port for HP Probook 4320s 4321s 4325s 4400 4411s 4420s 4421s 4425s 4520s 4525s 4710s 4720s 5130m 6440b 6450b 6455b 6540b 6550b 6555b Notebook Netbook Battery Plug Input: 12V DC Car Output: 18.5V 3.5A 65W Warranty: 1 Year Super Power Supply are manufactured and tested to match or exceed OEM products. Trademarked by Super Power Supply. Sold exclusively by Super Power Supply Features a USB Port for Charging USB powered devices.