The HP B5L34A Laser Jet 550-sheet Tray is a white unit designed specifically for HP LaserJet Enterprise printers. It has a total paper capacity of 550 pages and is compatible with models such as the Color LaserJet Enterprise M552dn, M553dn, M553n, and M53x. This tray is brand new in the box and is a genuine HP product, ensuring quality and compatibility with your printer. Manufactured in China, this accessory is essential for efficiently handling large print jobs and keeping your printer running smoothly.