Sorry, maybe because of the translation, but it's not clear.
you indicate in title
Case-fan-upgrade-HP-Pavillion-R5-1650-Super
Is this the computer model, because it is not an hp reference
r5 i guess referring to the processor and 1650 nvidia gtx graphics card probably ..
then "amd seen what looks like a space"
I guess
"and seen what looks like a space for a secondary case fan."
but where exactly, if you think you have a slot, with you at least one connector on the motherboard free fan?
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we need the exact model of your computer, and the product number
To find it follow this
for a desktop computer
HP Desktop PCs - How Do I Find My Model Number or Product Number? | HP® Customer Support
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