Are modular PSU leads universal?

[DEL 707]

I'm putting together an old PC with a XFX XTR PSU, it's modular.
The problem I'm having is that all the case fans have molex connectors and I've lost the molex connector for the PSU.

I can see people selling what LOOKS like the right part on ebay, but they're all for different brands of PSU's.

Will these work?

 

[DEL 707]

Thanks for the replies.
I'll take the safe option and just get an adapter.