This is an MTI © Yellow Toner Cartridge designed for HP Color LaserJet 3800, 3800dtn, 3800dn, 3800n and CP3505n, CP3505x, CP3505dn printers. MTI © compatible toner cartridges produce rich, vibrant colors. Crisp detail and clear image quality give you professional results that you can count on, at 40-60% of OEM prices. MTI © toner cartridges are engineered to exceed industry standards of high yield and exceptional quality, and guaranteed to perform with HP Color LaserJet Printers. All our products are factory-tested and ISO approved. We offer an exclusive 30-day customer satisfaction guarantee and 1-year warranty. Our dedicated customer care staff is available 9 a.m. to 7 p.m, Monday through Saturday, to answer any questions and provide technical support. Please note: MTI is the only licensed manufacturer and seller of MTI © printing products. We can only guarantee the quality and service of products shipping directly from MICR Toner International.