This 45W Charger Adapter is specially designed for the ASUS Zenbook UX21A and UX31A models. With an output of 19V and 2.37A, this adapter is perfect for charging your laptop and ensuring you can always stay connected. This adapter is refurbished, which means that the product has been overhauled and checked for any defects. This means you are assured of a high-quality product that is as good as new, but for a lower price. Refurbished products are an excellent choice for people looking for an affordable alternative without compromising on quality. By choosing a refurbished adapter like this, you also contribute to a more sustainable way of consuming. The reuse of electronic devices and accessories reduces the demand for new production and thus helps to reduce the amount of electronic waste. The dimensions of the connector are 4.0x1.35mm, which ensures that this adapter fits perfectly into the connection of your ASUS Zenbook UX21A or UX31A. With a power of 45W, this adapter is powerful enough to quickly charge your laptop, so you can get back to work in no time. In short, this refurbished 45W Charger Adapter is the ideal choice for anyone looking for a reliable and affordable charging accessory for their ASUS Zenbook. With the guarantee of quality and durability, this product is a smart investment for your laptop and for the environment.