Wall shelf support for CPU

[u/wdfknz4]

Hi,

I’m planning to buy this IKEA BERGSHULT/PERSHULT wall shelf:

BERGSHULT/PERSHULT Wall Shelf

I’m also considering adding these GRANHULT brackets to provide additional support and increase the weight capacity:

GRANHULT Bracket

My plan is to place my son’s PC on the shelf, which weighs approximately 12–15 kg.

My question is: Do I need to mount the brackets directly into a wall stud, or would using suitable wall fixings with the additional brackets provide enough support for this weight?

Thank you in advance for your advice and help.