Hello
I can't find this model on the HP site, only third-party site
but it is part of this series OMEN by HP Desktop PC - 880-000
this one must be quite close
there should already be a ssd certainly m2 500gb
You can very easily add a hard drive in the top compartment
Upgrading & Servicing Guide
Hard Drive/Solid-State Drive Replacement Instructions

if not, internally it must be possible do you know what the model of the motherboard is?
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