1 Copper

Dell inspiron 3670 psu upgrade

Hello so I got a msi gtx 1050 ti and put it in my dell inspiron 3670 and so far it has beem running pretty well. However, recently I have been wanting to upgrade the pwer supply. Currentlyu I have a 290 watt psu and I want to upgrade it with the evga 400 watt psu. I know I am going to have to use a 24 pin to 8 pin adapter and cut a small notch on the back for the plug. But, what about the fan as when I put it in the fan is facing the bottom and I am afraid it will overheat. Can someone send an image on the vent that they have cut out.