Design Features of DELL Laptop – Power adapter – 65 Watt (No Power Cable). The DELL 65-Watt Inspiron AC Power Adapter helps you to charge DELL laptops, with screen size ranging from 13-inches to 17-inches. The Inspiron power adapter provides you with continuous power supply. The adapter is lightweight for ease of use. The 3-pronged plug design of the DELL Inspiron laptop adapter prevents voltage drop. You can easily plug it into any wall outlet to deliver AC power to your laptop.