you have to take into consideration several factors
you have visible damage (fried Pin) in the PSU pinout , and although its a small possibility , there is still a chance that there is damage internally in the PSU
that PSU was most Probably used for mining and Overloaded 24/7 and had 10 x 8 pin pcie connectors were occupied , and also the user found himself somehow in need of more and added Molex to PCIe adaptors and i guess at least 3 adaptors were used (if not more )
taking the above into consideration we can safely assume that this is a damaged and abused unit , so it's highly likely that it might damage your PC