HP LaserJet Enterprise 600 flow M680z Toner Cartridges

The HP LaserJet Enterprise 600 flow M680z uses compatible toner in black, cyan, magenta and yellow. Black comes in standard CF320A (652A), about 11,500 pages, and high yield CF320X (653X), about 21,000 pages. Cyan CF321A, magenta CF323A and yellow CF322A (each also called 653A) yield about 16,500 pages each.