You can add an exhaust fan to the Top If you'd like. Just put it at the rear of the computer blowing out. Better yet add a bottom van in the front instead. That will give it great positive air pressure.

Hey all, just purchased this prebuilt yesterday so I can have a second rig at my parents house for gaming and some ETH mining. Was curious if I would be able to add an extra fan to the top of the mesh area on this case. Does anyone here know if it’ll help airflow or if it’ll somehow make it worse?

https://www.bestbuy.com/site/cyberpowerpc-gamer-supreme-gaming-desktop-amd-ryzen-7-3700x-16gb-memory-amd-radeon-rx-6700-xt-1tb-ssd-white/6455900.p?skuId=6455900

Cyberpower 6700xt Prebuilt Fans