Ideal for enterprise work groups and high-volume printing. Three cartridge sizes are offered for your HP LaserJet 600 Series printer. Count on Original HP Toner cartridges with JetIntelligence to deliver high-quality pages at fast speeds, plus affordable high-yield options[1] and innovative anti-fraud technology to enable the consistent HP quality you need.Compatible Printers: HP LaserJet Enterprise M 610 Series, HP LaserJet Enterprise M 610 dn, HP LaserJet Enterprise M 612 dn, HP LaserJet Enterprise Flow MFP M 634 h, HP LaserJet Enterprise M 611 n, HP LaserJet Enterprise M 611 x, HP LaserJet Enterprise M 611 dn, HP LaserJet Enterprise M 610 n, HP LaserJet Enterprise MFP M 636 fh, HP LaserJet Enterprise Flow MFP M 636 z, HP LaserJet Enterprise MFP M 635 fht, HP LaserJet Enterprise MFP M 634 z, HP LaserJet Enterprise MFP M 635 h, HP LaserJet Enterprise Flow MFP M 635 z