Print crisp, dynamic documents with the HP LaserJet 646a Yellow toner cartridge, compatible with HP Color LaserJet Enterprise CM4540 series printers. This original toner cartridge yields about 12,500 standard pages. HP's all-in-one cartridge design makes replacing your toner a snap. You get the same consistent, print shop quality, and trouble-free printing of Original HP Cartridges. Features Reliable Original toner cartridge For HP Color LaserJet Enterprise CM4540, CM4540f, and CM4540fskm MFP printers Yields about 12,500 standard pages *HPs inkjet print cartridges, ink cartridges and printheads are warranted to be free from defects in materials and workmanship during the period of the warranty. Get the highest quality ink cartridges for all types of printers at thesource.ca.