Molex compatibility with motherboard

[Jack_paric]

Ok so I wanna build a new PC but the thing is that the case hase already installed some molex fans, and I don't know if my motherboard will suport them: I don't wanna buy adapters and I don't wanna plug them straith into the PSU.
Should I look for a different case or should I buy new fans and change them with case ones. Or is there any other solutions??
Thanks in advance.

https://pcpartpicker.com/list/hDhCKZ
PS i won't use that cooler.

 

[atljsf]

the molex fans uses a molex connector, it can't be connected to the mainboard, it goes directly to the molex connector on the psu, the psu feeds them with 5 or 12 volts and they spin as fast as they can

there is no speed control in them, they run or they don't

if you want fans with speed control, get the right ones and remove those you have

 

[Dark Lord of Tech]

Molex fans will run FULL when connected to the PSU. No control with molex.