Shop At 247 Compatible Toner Cartridge Replacement for HP CB540A CB541A CB542A CB543A (1 Black,1 Cyan, 1 Yellow, 1 Magenta, 4-Pack) Shop At 247 brand cartridge is sold exclusively by Shop At 247 Shop At 247 offers One-Year Warranty against defects Shop At 247 offers 180 Days Money Back Guarantee Black: Up to 2,200 Pages at 5% Coverage ; Color: Up to 1,400 Pages at 5% Coverage These replacement cartridges were professionally manufactured in an ISO 9002 factory