Amazon.com: HP 81A Black Toner Cartridge | Works with HP LaserJet Enterprise M604, M605, M606 Series; HP LaserJet Enterprise MFP M630 Series | CF281A : Office Products
Amazon.com: MTI 81A MICR Toner Compatible Replacement for HP CF281A 281A | Laser Printers M604 M605 M606 M630 MFP Magnetic Ink Check Printing Cartridge : Office Products