This is a compatible Toshiba TFC28K black laser toner cartridge designed for use with Toshiba e-Studio 2330, 2830, 3530, and 4520 laser printers. It offers a standard yield of up to 29,000 pages, providing an economical alternative to the original Toshiba TFC28K toner cartridge. Manufactured 100% brand new, this compatible toner is engineered for quality and reliability, ensuring high-quality printing results. The use of compatible toner cartridges does not void your printer's warranty and is backed by our 100% Quality Satisfaction Guarantee.