01-16-2020 04:26 PM
01-19-2020 02:11 AM
Welcome to the HP Support Community. I'd be happy to assist you with the ink cartridge query.
HP OfficeJet Pro 8020 All-in-One Printer is compatible with HP 910. You'd not be able to use any other ink cartridges. If the HP 934/ 935 ink cartridges are un-opened, I'd suggest you Contact HP in your region regarding this.
Hope this helps! Keep me posted.
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