If you look at the ** comments, it suggests that the psu does not have the requisite eps power connectors.
That may not be necessary with such a weak processor and a single graphics card.
I suggest you rethink.
Some thoughts:
Only if you will be gaming at 4k resolution with a monitor capable of higher than 60hz would a 3080 be appropriate.
a 2600 may be too weak to drive such a graphics card.
Ryzen wants fast ram to perform at it's best. 3200 is a bit slow.
I will never again build without a ssd for the "C" drive. It makes everything you do much quicker.
240gb is minimum, it will hold the os and a handful of games.
If you can go 500gb you may never need a hard drive.
With ssd prices down, even 1tb is reasonable.
You can...