The HP 45A (Q5945A) Black Toner Cartridge is a reliable, high-performance solution for offices that demand crisp, professional black-and-white printing. Designed for HP LaserJet Enterprise printers, this standard-yield cartridge delivers consistent results and dependable output for everyday business needs.

• Medium to large businesses with steady black-and-white printing demands
• Teams printing high-volume documents such as reports, forms, and contracts
• Teams using HP LaserJet 4345 MFP series printers

• Print up to 18,000 pages: Delivers solid performance and a low cost per page for high-volume printing environments.
• Sharp, clear text: Produces consistent, professional-quality output from the first page to the last.
• Trusted HP engineering: Designed for seamless compatibility with HP printers, minimizing downtime and print errors.
• Efficient, mess-free replacement: Easy to install and maintain—ideal for busy workgroups.

This cartridge offers the quality and reliability you expect from HP. It’s a smart choice for business teams who need professional prints and smooth performance with every job.