HP 87X CF287X Black High Yield Cartridge - 18,000 pages - HPLCF287XO - To suit printers; Laserjet Enterprise M506 Laserjet Enterprise M506dn Laserjet Enterprise M506x Laserjet Enterprise M527 Laserjet Enterprise M527dn Laserjet Enterprise M527z Laserjet Pro M501dn Laserjet Pro M501n