Are case fans meant to be daisy changed together on a single molex connector?

Xenphor

Member
Sep 26, 2007
153
0
76
Some of my fans have come with adapters that convert 3pin to molex male/female. I'm assuming these are meant to be daisy changed together instead of using separate molex connectors? (I have no spare connectors on the MB)
 

goobernoodles

Golden Member
Jun 5, 2005
1,820
2
81
Some of my fans have come with adapters that convert 3pin to molex male/female. I'm assuming these are meant to be daisy changed together instead of using separate molex connectors? (I have no spare connectors on the MB)
That's what they're there for, yes. Just do whatever works in a clean manner. Those things draw so little power you could chain up an entire case full of them.
 

aigomorla

CPU, Cases&Cooling Mod PC Gaming Mod Elite Member
Super Moderator
Sep 28, 2005
21,019
3,490
126
yes cuz the psu inside your computer is a DC constant voltage type.

The amperage fed to each line is variable and can handle up to 15 amps typically or greater.

That means u can daisy chain as many fans as you want on that one molex going directly to your psu as long as u dont exceed the 15amps, because at higher amperage u will burn the wire out.

The average fan pulls arround .15-.25amps.. :p so yes thats a lot of fans u can daisy chain.
 

Xenphor

Member
Sep 26, 2007
153
0
76
okay I have another question now. Some adapters that I have are 3pin to 4pin molex male/female, but another adapter I have is 3pin to 2pin male molex, with the other 2 pins missing. Is there a difference between the two adpaters?
 

natto fire

Diamond Member
Jan 4, 2000
7,117
10
76
Not really a big difference, assuming they are both wired to the yellow 12v line in the molex connector, as far as the fan goes. With daisy chaining the one with only two wires, you lose the pass through of the Red 5v line, so you wouldn't want to hook a molex powered device that was expecting all 4 pins. With SATA/PCI-e power being so common, I doubt you will run into that scenario.