The 45, 000 Page High Yield Toner Cartridge from Dell is designed to work with Dell Monochrome Laser Printers. It produces high resolution printouts with impressively sharp images & text. This black cartridge features a yield of up to 45, 000 pages. Toner yields based on printing pages with 5% coverage in accordance with ISO/IEC 19752 testing methodology. Yields vary with usage & environmental conditions.