Enjoy legendary HP quality and reliability by using the HP 49a. HP Smart Printing technology and specially formulated toner make sharp, professional printing easy, reliable and cost-effective. Toner cartridge is designed for use with Hewlett-Packard LaserJet 1160, 1160Le, 1320, 1320t, 1320n, 1320nw, 1320tn, 3390 and 3392 printers. Cartridge yields approximately 2,500 pages.Enjoy legendary HP quality and reliability by using the HP 49a. HP Smart Printing technology and specially formulated toner make sharp, professional printing easy, reliable and cost-effective. Toner cartridge is designed for use with Hewlett-Packard LaserJet 1160, 1160Le, 1320, 1320t, 1320n, 1320nw, 1320tn, 3390 and 3392 printers. Cartridge yields approximately 2,500 pages.