There are two more new ones (from bought together), sealed, but I'm willing to bet that there will be a different serial number. I'll wait for Logitech's answer here, maybe they will explain what to do to EVERYONE who continues to buy such products now. For an answer in style, contact the store, technical service, etc. - the third file shows that the store sold a completely different mouse. Previously, I had already thrown out a couple of MX and one M590, I could not find in my documents when their warranty had expired, apparently they have been cheating like that for a long time.
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