Based on this product's specifications, here are some alternatives and similar models
Power adapter Dell 90W 19.5V 3.34A (MMYMF) for compatible portable devices
Summary description:
Dell AC adapter, 90W output at 19.5V and 3.34A, model MMYMF. Designed to power and charge compatible portable devices and laptops that accept a 19.5V/3.34A supply. Includes standard AC input and DC output connector (check device compatibility). Practical for replacing lost or faulty adapters and for travel or office use.