They feature an innovative toner q2610x and cartridge design that supports fast, reliable, high volume printing. All the components in the print cartridge design are precisely matched with HP LaserJet 2300 printers. HP LaserJet print cartridges also include HP smart printing supplies features making them easy to use and maintain from ordering to installation. Designed together with HP LaserJet 2300 printers, these supplies ensure crisp, sharp results every time for professional users.