I replaced this toner for my HP Laserjet 1020 today although I ordered it a few weeks ago. All seemed to be ok, but the printer rang/screeched when a document was sent to print. I figured I could live with that, but then it started jamming the printer now and again. Still, I need this printer for my business and will see how it goes down the line. I don't want to have to go out to a retail store and pay premium....but my business comes first. Wonder if others have experienced this problem. I know the price is extraordinarily low, but I went by all the reviews and felt I was safe to order.