This is a remanufactured replacement for the Hewlett Packard CB384A (HP 824A) black laser drum unit. It is designed to perform reliably with your HP printer, providing a cost-effective alternative to the original HP drum cartridge. This remanufactured drum is made using both OEM and non-OEM parts, ensuring high quality and performance. The use of this remanufactured drum cartridge does not void your printer's warranty. Backed by our 100% Satisfaction Guarantee.