At times its hard to find. Current printer with 5 years and still going - requires this cartridge. Although its hard to find, we manage to get this at HP product online all the time.
[This review was collected as part of a promotion.] I ordered a new toner cartridge on line. It came in a box I could use to recycle the previous one. The step by step instructions are in icons on the cartridge itself. The whole process of replacing the spent cartridge took just a few minutes and a couple more to package up the old one. The test page printed perfectly