Hi Adrian,
Glad to get your message.
The inlet and outlet on the Z490i UNIFY monoblock are fixed.
They could not be reversed.
If you have a single CPU water block, such as BPPRE-CPUMSM-SL,
It can be reversed because the distances between the screw holes are the same.
But the monoblock can't be.
If you have any more questions, please don't hesitate to contact us.