Toner Kingdom Compatible with HP CF226X 26X Black Toner Cartridge for Use in HP LaserJet Pro MFP M426w M426fdw M426fdn M402d M402n M402dn M402dw Printers - 1 Pack, 9K High Yield Page Yield: Up to 9,000 pages at 5% coverage (Letter/A4) Compatible Printer List: HP LaserJet Pro M402dn, HP LaserJet Pro M402dw, HP LaserJet Pro M402n, HP LaserJet Pro MFP M426fdn, HP LaserJet Pro MFP M426fdw Printers Free shipping on Same day or the next business day. Toner Kingdom offers One-Year Warranty on the purchase of our replacement cartridges. If the problem is a bad cartridge we will either replace it or refund your money. Troubleshooting steps for defect: 1. Please shake the toner cartridge a few times maybe the toner got solidified and clean it. 2. Please kindly try 3 times: Turn off printer-- take out toner- wipe chips and connection of your printer--re-install--restart your printer .