Featuring HP smart printing technology, the HP 305X High Yield Original LaserJet Black Toner Cartridge lets you print up to 4000 pages of high-quality documents for your professional and creative needs. Consistent and always reliable, Original HP LaserJet toner cartridges help you waste less and are easily recyclable. This 305X High Yield Original LaserJet Black Toner Cartridge is compatible with HP LaserJet Pro 300 Colour MFP and HP LaserJet Pro 400 Colour MFP printers.