Yesterday customers using HP 934/950/970 cartridges using non-HP chips started seeing a "cartridge problem" message on their printers. This is not a problem with the non-HP chips but the Dynamic Security Feature on the HP printers listed below (this does not apply to any printers that aren't listed)


Product series

OfficeJet Pro 6230 series
OfficeJet 6810, 6820 series
OfficeJet Pro 6830 series
OfficeJet Pro 8610, 8620, 8630, 8640, 8660 series
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