The HP 21+22 cartridge included in the HP 21/22 cc630A (C9351A C9352A) combo pack cartridge generates approximately 190 pages. On the other hand, the 22 cartridge in this HP combo pack cartridge pack yields approximately 165 pages. Together, this black/tri-color cartridge produces impressive results with sharp and crisp details. The high quality inks of this HP combo pack cartridge produce photo prints with rich colors that are fade resistant. The functionality and performance of this black/tri-color cartridge makes it ideal for occasional printing requirements at home or office. The HP 21/22 (CD946FN#140) shares compatibility with HP Deskjet F340, F380, F4180, F350 All in one printers, Officejet 4315 series, Officejet J3680, PSC 1410 series and few other models.