This is a Compatible Hewlett Packard (HP) CTQ3963A Magenta Laser Toner Cartridge is guaranteed to perform with Hewlett Packard (HP) HP Color LaserJet 2550, 2820, 2840 Printer Series. It replaces the original Hewlett Packard (HP) Q3963A Toner Cartridge. The compatible Magenta replacement CTQ3963A Laser Toner Cartridges and supplies (also known as generic) are specially engineered to meet the highest standards of quality, reliability and exceptional yields that meet OEM (Original Equipment Manufacturer) standards for the Q3963A and offer high-quality printing results. Our compatible CTQ3963A is ISO-9001 certified and contains up to 85% new parts including wiper blades, opc drums, and other internal components. While most competitors simply refill the toner cartridge and hope the drum and other key components last we fully disassemble the toner cartridge and rebuild it to ensure the highest quality prints. Our high quality CTQ3963A toner cartridges are an economical and sensible alternative to expensive OEM Q3963A Hewlett Packard (HP) Laser Toner Cartridges and supplies. The use of compatible replacement Laser Toner Cartridges and supplies does not void your Printers Warranty. We offer a 100% Quality Satisfaction Guarantee on our Compatible CTQ3963A (Q3963) Laser Toner Cartridges and supplies. This non-HP CTQ3963A replacement laser toner cartridges includes a new electronic smart chip. The new chip allows the Hewlett Packard (HP) HP Color LaserJet 1500 Printer Series and our compatible CTQ3963A cartridge to interact and track toner usage. Without this chip your printer's toner level software will always think the CTQ3963A cartridge is low. Most other companies do not include a new smartchip with their toners. If you see a lower price elsewhere it probably mean they are not giving you a new chip.