Question little help here?

I do
http://prnt.sc/p83jyr
Hello guys,I wanted to ask smth about these PSUs.Are they similar?cuz I wanna remove the one in the first link and replace it with the one in 2nd link.Does it work?

Taking a picture of the back of the PC where the PSU mounts to the chassis as well as what model Dell, HP, etc. these PSUs are coming out of, because NEITHER of these PSUs look standard and Dell (the PSU in the second picture) tends to use proprietary connectors.