Count on this Original HP toner cartridge with JetIntelligence for high quality at fast speeds. Look professional on every page with vibrant, high-quality prints that stand the test of time. Page maximizer technology delivers more pages per cartridge than before. Intelligently track toner levels with print-gauge technology to help ensure you get the pages you paid for. Innovative, anti-fraud technology helps ensure you're getting authentic HP quality. Quickly replace your cartridges with auto seal removal & easy-open packaging. Maximize efficiency with this toner cartridge specially designed to work best with your HP LaserJet Enterprise M611, M612 series; Enterprise MFP M634, M635 & M636 series.