Save and print even more with our compatible toner cartridges! This listing contains 2, HP 308A Q2670A Black toner cartridges. Compatible with the following Color LaserJet printers 3500, 3500n, 3550, 3550n, 3700, 3700dn, 3700dtn and 3700n. Each professionally compatible cartridge contains up to 85% new parts including wiper blades, OPC drum and an electronic smart chip for precise toner level display. Our cartridges are also backed by a two-year warranty and guaranteed to meet or exceed the same quality standards as the original OEM brand. Please note, retail packaging may vary and these items will only work with printers purchased within the United States and Canada. LD compatible laser cartridges are not compatible by HP. We are the exclusive reseller of LD Products brand of high quality printing supplies on Amazon.