Compatible HP 643A Black Toner Cartridge (Replaces Q5950A Laser Printer Cartridge) is in stock and available for the low price of £63. The Compatible HP 643A Black Toner Cartridge is fully compatible with and guaranteed to work in the following HP laser printers: HP Colour LaserJet 4700 , HP Colour LaserJet 4700dn , HP Colour LaserJet 4700dtn , HP Colour LaserJet 4700n , HP Colour LaserJet 4700ph+ it will give you a page yield of Approx. 11,000 pages @ 5% average coverage. The Compatible HP 643A Black Toner Cartridge is a reliable, low cost Compatible product and a money saving alternative for the original HP 643A. Our own brand product will work in your laser printer in exactly the same way as an original.Compatible HP 643A Black Toner Cartridge (Replaces Q5950A Laser Printer Cartridge)