Our Compatible supplies for the Panasonic KX-FL541 have a 100% Satisfaction Guarantee. This Panasonic KXFL541 uses a our compatible KXFA83 Laser Toner Cartridge. Our compatible KX-FA83 for the Panasonic KX-FL541 replaces the original Panasonic KX-FA83 Laser Toner Cartridge. The compatible replacement Laser Toner Cartridges and supplies (also known as generic) are specially engineered to meet the highest standards of quality, reliability and exceptional yields that meet or exceed Panasonic OEM (Original Equipment Manufacturer) standards for the Panasonic KX-FL541. The use of compatible replacement KX-FA83 Laser Toner Cartridge and supplies does not void the KX-FL541 Laser Fax Machine Warranty.