Panasonic UG5545 Fax Toner Cartridge for use with UF-7100/UF-8100 fax machines. Page yield 7500. Panasonic UG5545 toner has been designed with UF-7100 and UF-8100 fax machines in mind. This makes it easier to fit than generic alternatives and guarantees the best quality of reproductions. The colour-rich toner has been designed to transfer smoothly and evenly, leaving a gleaming finish and well defined text and images. For the best quality documents, choose nothing less than genuine Panasonic toner cartridges.