4inkjets.com's compatible replacement for the HP CF380X (HP 312X) high yield black laser toner cartridge is guaranteed to perform with your HP laser printer. It replaces the original HP CF380X laser toner cartridge. Our compatible replacement CF380X laser toner cartridge is not a remanufactured cartridge, but rather, a brand new toner specially engineered to meet the highest standards of quality and reliability. Although our compatible replacement for the HP CF380X toner is not manufactured by HP, the page yield meets or exceeds OEM (Original Equipment Manufacturer) page yield and offers comparable printing results. The use of LD compatible replacement laser toner cartridges and supplies does not void your printer's warranty. We offer a 100% Quality Satisfaction Guarantee on our LD compatible CF380X laser toner cartridges and supplies.