HP 970 and HP 971 Ink Cartridges works with below HP models :
HP Officejet Pro X451
HP Officejet Pro X451dn
HP Officejet Pro X451dw
HP Officejet Pro X476
HP Officejet Pro X476dn MFP
HP Officejet Pro X476dw MFP
HP Officejet Pro X551dn
HP Officejet Pro X551dw
HP Officejet Pro X576dn MFP
HP Officejet Pro X576dw MFP
HP 970 Ink Cartriddge
HP 971 Ink Cartridges
Yield :
Black : Approx. 3000 pages at 5% coverage
Color : Approx. 2500 pages at 5% coverage