Lexmark Extra High Yield Return Programme Cartridge Black. For use in X792 series printers. OEM: X792X1KG. Approximate page yield: 20,000. This extra high yield laser toner cartridge has been specially engineered for use in the X792 series of LaserJet printers. It's impressive capacity yields up to 20,000 pages to allow you to produce high standard, professional prints on a consistent basis. As part of the Lexmark return programme, you can send back the cartridge after use in exchange for discounts on future purchase, saving the environment and your wallet.