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HP ProDesk 405 G4-Desktop-Mini-Business-PC

Is it possible to upgrade the CPU on a HP ProDesk 405 G4-Desktop-Mini-Business-PC? I would suppose it has an AM4 Socket as most Ryzen CPUs and upgrade to 2400GE should be possible but can you also upgrade to an G CPU or does it have to be GE. What about Zen+ or Zen2?

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