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Search "HP ink cartridge" and you'll get thousands of results before you've even typed your printer's name. That's the core problem with buying ink: HP has run dozens of numbering systems over the past twenty years, and a lot of those systems overlap on printers that look nearly identical. Buy by guesswork and there's a real chance the box that shows up doesn't fit. This guide walks through how to actually find the right ink for your printer, using the HP Smart Tank Plus 651 as a working example …

If your printer's toner light just came on, there's a good chance you've already run into the problem this article exists to solve: HP makes a lot of similar-looking Color LaserJet models, and the cartridge that fits one won't fit the other. Order the wrong one and you're either sending it back or leaving it in a drawer. The HP LaserJet Pro M454 and the Color LaserJet MFP M283fdw get mixed up constantly because they sit in the same general class of small-office color laser printers. They don't t …

If you've been shopping for toner online, you've probably noticed the word "OEM" stamped on a chunk of the listings, usually next to a price that's a good bit higher than everything around it. So the obvious question is whether that badge means anything or whether you're just paying more for a logo. Here's the full breakdown. What OEM Actually Means OEM stands for Original Equipment Manufacturer. In printing, it means the same company that built your printer also made the cartridge going into it …