LD Products is proud to offer replacement black laser toner cartridges for your HP 49X now compatible by Xerox! Xerox is a trusted brand in the printing industry and is known for their innovative technique. You can purchase Xerox compatible replacement cartridges for your HP Q5949X high yield toner and know that you will be saving money without having to sacrifice image quality. Xerox is dedicated to excellence in print quality and cartridge performance. Use of Xerox compatible cartridges for HP printers will not void your printers warranty. For use in the following HP LaserJet printers 1320, 1320N, 1320NW, 1320T, 1320TN, 3390, and 3392. We are the exclusive reseller of LD Products brand of high quality printing supplies on Amazon.