Polaroid Professional H-WC564XLB-PRO Remanufactured Inkjet Cartridge Replacement for HP 564XL (CB321WN, CN684WN), Black Ink Replaces HP 564XL (CB321WN), (CN684WN) high yield black inkjet cartridge Compatible with: HP 3520, 3521, 3522, Officejet 4620, 5510, 5511, 5512, 5514, 5515, 5520, 5522, 6510, 6512, 6515, 7510, 7515, C6340, C6350, C6380, C6383, B8550, B8553, B8558, D5460, D7560, C510a, C309a, C410a, B209A, B209B, B209C, B210A, C309, C309n, C310 Prints up to 550 pages Includes 1 black, premium inkjet cartridge, part number: H-WC564XLB-PRO Polaroid Professional 100% performance guarantee