Laser Tek Services® HP 564XL series (CN684WN, CB322WN, CB323WN, CB324WN, CB325WN) replacement ink cartridges are compatible with the following printer models: HP DeskJet: 3070a, 3520 eAIO, 3521, 3522, 3526; OfficeJet: 4620, 4622; Photosmart 5510, 5511, 5512, 5514, 5515, 5520, 5522, 5525, 6510, 6512, 6515, 6520, 7510, 7515, 7520, B8550, C6340, C6350, C6380, D5445, D7560, D5460, eStation All-in-One Printer-C510a, Plus All-in-One Printer-B209a, Plus e-All-in-One Printer-B210a, Premium All-in-One Printer-C309g, Premium e-All-in-One Printer-C310a, Premium Fax All-in-One-C309a, Premium Fax e-All-in-One-C410a, Premium TouchSmart Web All-in-One -C309n. Laser Tek Services® Replacement Ink cartridges offer an excellent choice over expensive brand name Ink cartridges for your printer. They are professionally manufactured to produce the best quality prints for your HP Printer. All of our replacement cartridges have a Fresh supply of ink for premium performance giving you quality,clean and clear prints page after page. Our ink cartridges also have a new indicator chip to communicate with your printer properly and to accurately track your ink levels, and as always, all of our cartridges come with a 100% Satisfaction Guarantee! This Package contains 3 Black (CN684WN) Compatible Replacement Ink Cartridges with an approximate page yield of 550 pages.