HOW TO DO A PROPER SEARCH
For example if your printer model is: HP LaserJet Enterprise 500 MFP M525dn the most import is to type in the printer model which is M525dn or just M525. The letters follow the number are not necessary as these refer to the extra options on you printer d identifies your printer has a duplexer and n is network printer and w as wireless printer. Cartridge code can also be used to find your cartridge. Example OEM cartridge code may start with the following letters CC, CB, CE, CF,or W. For example the most recent code start with "W" here is an example W2180A.
When you are out of toner, or your old cartridges start failing on you, it is time to find something new.
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