Buy the HP CB400A black toner cartridge with 100% confidence! Low Prices and Large Selection on Quality Products. Find everyday low prices on the HP CB400A genuine OEM toner cartridge from a large selection of printer cartridges.Easy to Use and Professional Service. Find all the supported laser printers for the HP CB400A toner cartridge in the "Supported Models" section. Return Policy : Manufacturer.About the HP CB400A black toner cartridge:HP CB400A Type: Genuine OEMA HP CB400A genuine OEM means that it is produced by the same company that makes your printer. Genuine OEM toner cartridges typically command a premium price versus their compatible and remanufactured counterparts, but have been fully certified by their original manufacturer for 100% compatibility and performance with their printers. HP CB400A Yield: 7500A 7500 yield for the HP CB400A means that at 5% coverage (5% of a page is printed on), this toner cartridge will yield ~7500 printed pages.