The ink if your HP LaserJet Pro printer ran out. You probably need HP 220A toner cartridges. These toner cartridges are made for HP laser printers, such as the HP Color LaserJet Pro 4302 and the HP Color LaserJet Pro 4202. Be sure to check the list with suitable printers on the product page, so you can be sure the toner cartridge is suitable. With the black HP 220A toner cartridge, you can print up to 2000 pages. With the color toner cartridges, you can print about 1800 pages. Choose an HP 220X toner cartridge if you print often, because you can print for longer with this XL toner cartridge.