Compatible with HP LaserJet 4100 LaserJet 4100DTN LaserJet 4100MFP LaserJet 4100N LaserJet 4100TN LaserJet 4101MFP. Package Content Compatible HP C8061A (HP 61A) C8061X (HP 61X) Black Micr Toner Cartridge. Approximate Page Yield: 10000 - Black Micr pages per cartridge at 5% coverage HP C8061A (HP 61A) C8061X (HP 61X) Black Micr Toner Cartridge. Prints high-quality images and texts. Microchip Included: The intelligent chips make cartridges work with your printer.