The NCTRG Genuine Dell Vostro 3490 Laptop LCD Back Cover is a high-quality replacement part specifically designed for the Dell Vostro 3490 model. This black back cover is a genuine Dell product, ensuring a perfect fit and quality construction. It is a unit sold individually and is compatible with the Dell Vostro 3490 laptop, making it an ideal choice for those in need of a replacement back cover for their device.