Based on this product's specifications, here are some alternatives and similar models
Power Adapter IBM 65W 20V 3.25A
Summary description:
The IBM 65W power adapter is designed for laptops, providing a reliable power supply with an input voltage of 100-240V. Its compact indoor design and black color make it a perfect fit for home or office use. With a power output of 20V and 3.25A, it ensures efficient charging and performance for your devices. Model number: 45N0322-RFB.