Fan connection advice

mistermoleymole · 10 Jan 2013 at 10:49

Hi all,

Can anyone advise if what i want to do is possible.

At present i have an Antec Micro Fusion case with the system fans just directly powered with little switches for speed on each fan. However, I would like to connect the system fans to my mobo and have it control there speed based on system temperature.

I only have one connection on the mobo for sys fan. Its a 3 pin connector consisting of gnd +12v & sensor. The fans in the case are all stackable 4pin molex type connectors.

Could i buy one of these and plug them all into it and then into the motherboard and gain control from the bios settings?

Many thanks
MMM

nick.lidgett · 10 Jan 2013 at 10:53

best thing would be to edit your post as you are not allowed to name competitors and link to their sites in these forums.

mistermoleymole · 10 Jan 2013 at 10:58

nick.lidgett said:
best thing would be to edit your post as you are not allowed to name competitors and link to their sites in these forums.

ahh sorry .... is that better?

ubersonic · 10 Jan 2013 at 11:37

mistermoleymole said:
Could i buy one of these and plug them all into it and then into the motherboard and gain control from the bios settings?

Many thanks
MMM

No, your after PWM (4 wire) fans, your fans are non PWM and from the sound of it so is your board

mistermoleymole · 10 Jan 2013 at 11:45

Are you saying its not possible at all? I was thinking of buying new fans also but even with new fans would I still not be able to use the mobo connector?

Cheers

ubersonic · 10 Jan 2013 at 12:15

mistermoleymole said:
Are you saying its not possible at all? I was thinking of buying new fans also but even with new fans would I still not be able to use the mobo connector?

Cheers

Sadly no, or not without some kind of USB fan controller or something, you said your board has a 3pin connector, the third wire is an rpm signal wire for reporting fan speed to the board only. Controlling the speed via the board requires a 4 pin connector with a 4th wire for control of the fan speed.

Tealc · 10 Jan 2013 at 17:11

The images you posted, if when connected to the daisy chain of fan Molexes, would provide 12v and a ground to all the fans at all times, unless your motherboard header in question supports DC voltage control.

Some motherboards have all headers enabled for control, some have just one, some even just offer PWM control for one header.