The HP 56 Black Ink Cartridge is a genuine, original product manufactured by HP specifically for use with select HP printers. This ink cartridge is designed for inkjet print technology and is compatible with various HP printer models such as the DeskJet 450, PhotoSmart 7150, and OfficeJet 4110. The black color cartridge is sealed in a box, ensuring the freshness and quality of the ink. With an expiration date of 5/2010, this product is still guaranteed to provide reliable and high-quality printing results for HP printer users.