PREMIUM QULAITY OF HP GENUINE BLACK TONER CARTRIDGES YIELDING 11,000 PAGES. COMPATIBLE PRINTERS (IF ANY): HP LASERJET ENTERPRISE M607,HP LASERJET ENTERPRISE M608,HP LASERJET ENTERPRISE M609,HP LASERJET ENTERPRISE MFP M631,HP LASERJET ENTERPRISE MFP M632,HP LASERJET ENTERPRISE MFP M633