Compatible Black For HP Toner Cartridge C3909A (15,000 Page Yield) for IBM Network Printer 24, Lexmark Optra N 240, Lexmark Optra N 245, Mopier 8000 Compatible with HP LaserJet 5Si, 5Si Mopier, 5Si MX, 5Si NX, 8000, 8000DN, 8000MFP, 8000N Models 6 months manufacturer warranty against product defect 30-day satisfaction money back guaranteed Remanufactured by Toner Spot under the highest standards 15,000 page yield at 5% coverage