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I was looking at micro-PC to test some nodes, but here in UK they are still expensive, while the laptops are quite cheap, and there is the issue with them being almost impossible to upgrade (not the expert IT that I would like to be). I was thinking for a Hive node, or at least a HE node if possible. Can I put both on a server?

I don't have any experience with HE nodes so I can't tell you tbh.