Look at the powers label on the box/psu, 12v rating from one image i found is 345W (so not a true 500W psu).
Check same for ATX12V rating, the one i found is Vers.1.3 (20 year old tech std.).
Ryzen 5 5600x, B550 aorus pro ac, Hyper 212 black, 2 x 16gb F4-3600c16dgtzn kit, NM790 2TB, Nitro+RX6900XT, RM850, Win.10 Pro., LC27G55T..