Product: HP 26A Black Toner Cartridge | Works with HP LaserJet Pro M402 Series, HP LaserJet Pro MFP M426 Series | CF226A
Category: Office Products
Price: $146.89
Rating: 4.6 out of 5 stars
Availability: In Stock
Review: Necessary for printer to work, and it seems to last for quite some time before needing replacement.  Seems expensive, but I suppose not if you figure out the cost per printed page.  You will want to have a backup cartridge available-- they can run out of toner quickly.