HP LaserJet Enterprise 600 Printer M603 series - Manual (Page 112)

Your print cartridge might not be a genuine HP print cartridge if you notice the following:
● The supplies status page indicates that a non-HP supply is installed.
● You are experiencing a high number of problems with the print cartridge.
● The cartridge does not look like it usually does (for example, the packaging differs from
HP packaging).
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