Package Included:MLT-D105L x 2 Page Yield:High Capacity: Up to 2,500 pagesper BLACKbased on 5% coverage (Letter/A4 size paper)Compatible Printers:For SCX-4623F, SCX-4623FN, SCX-4623FW, ML-2525, ML-2525W, ML-1910, ML-1915, ML-2540, ML-2545, ML-2580N, SCX-4600, SF-650, SF-650PInstallation:? Shake the toner cartridge side-to-side gently to evenly distribute the toner? Remove the orange cover & Pull the plastic seal (where you see an orange ring) & Remove the protection paper, if applicable? Insert into the printer? Enjoy your printings!!Storage recommendations for each toner cartridge:In a dry and cool placeDO NOT EXPOSE TO SUNLIGHTQuality Control:HI-VISION HI-YIELDS toner cartridge are made by ISO9001 Certified Factory to meet OEM standardsWarranty: HI-VISION HI-YIELDS offers Full money back guarantee for defective items & Full money back guarantee for defective items for defective toner cartridges purchased from both Seller-Fulfilled Channel and Amazon-Fulfilled Channel