Package Includes: 1 x Black Toner Cartridge 121 CRG-121 Page Yield: Up to 5,000 pages per cartridge 121 black at 5% coverage (Letter/A4) Compatible Printers: Image CLASS D1620 printer (2223C024) Image CLASS D1650 printer (2223C023) Installation Step: Step 1: Shake the toner gently from side to side several times to distribute toner powder Step 2: Pull out the sealing tape slowly with a horizontal force Step 3: Pull out the protective Step 4: Insert the toner cartridge into correct printer slot ZIPRINT - Printing Easy!