This genuine and original Panasonic UG-3313 black print toner cartridge is the perfect fit for your Panasonic fax machine model Panafax uf550. Designed to deliver high-quality laser prints, this cartridge ensures crisp and clear text, making it ideal for both personal and professional use. With compatibility for Panasonic brand products, you can trust that this toner cartridge will perform to the highest standards. Whether you're printing important documents or everyday materials, this cartridge is a reliable choice that will not disappoint.