If you're looking for a universal laptop charging pin, you're likely referring to a laptop charger tip or adapter that can fit multiple laptop models. These are sometimes called universal laptop charger tips or universal laptop charger connectors.
These universal charging pins typically come with multiple adapter tips or connectors that can be swapped out to fit different laptop models. They often have adjustable voltage settings as well to accommodate various laptop power requirements.
You can find universal laptop charger kits with multiple charging pins from various electronics retailers, both online and offline. When purchasing a universal laptop charger, ensure that it supports the voltage and power requirements of your laptop and comes with the appropriate adapter tips for your specific laptop model. Additionally, consider factors like compatibility, build quality, and safety certifications to ensure a reliable and safe charging solution for your laptop.