what is pwr_fan1/2 and cha_fan1/2

lepbob

New member
hi everyone, i was reading through my soon to be motherboard manual, Asus p5w dh deluxe, and I read this

"if installing a dual core cpu, connect the chassis fan cable to the pwr_fan1/2 or the cha_fan1/2 to ensure system stability"

What does this mean exactly? I will have a Antec nine hundred if thats relavant.

Thanks.
 
They are just 3pin fan headers on the motherboard mate, pwr1/2 are for plugging fan feeds from the power supply into (if available - often not) and the the cha_fans are Chassis fans (case fans) and are exactly the same. It will make no difference what you plug into what, you will just have to make slight alterations in your monitoring applications settings to read them. ASUS PC Probe allows you to just assign a name to any header you want, so you could plug the cpu fan onto pwr_fan 1 and just rename pwr_fan 1 to CPU..... if you get me
 
Is that aswell as pluggin the cpu fan into the CPU_FAN socket? So I assume I can only use these sockets if my cpu fan has a extra connector for it? The fans in the ine hundred should plug into this for monitoring purpose? None of these need to be used tho right if I am not 100% sure what I am doing :p
 
You can use none of them or all of them mate, for whatever you want. They are just a 12v, a Ground and a monitoring peg. Not all fans will make use of the monitoring peg but the ones that do will allow you to view their RPM with the appropriate application.

Plugging the cpu fan into the cpu_fan header is fine aswell, it's just named cpu_fan as it is closest to the cpu socket really.
 
just to clarify,if your not using a fan controller then plug your fans into the mobo.

if you want to use a fan controller for your fans you dont use the mobo plugs.

Raging.
 
The only fans Ill have will be the case fans in the Antec nine hundred, they have a speed switch on them, but from what you are saying I can maybe control them easier if I plug them into these mobo sockets?
 
no,the case fans will probably have molex connectors which will connect straight to the power supply.

fan controllers are stand alone controllers for your fans,they slot into a drive bay and you hook your fans to it.

the headers for fans on the mobo will be controlled by the mobo/monitoring software,you can change the speed in your monitoring software if it allows so..

hopefully you understand now.

Raging.
 
questions

Hi! I am trying to build my PC from scratch (with A LOT of help!). I have an Antec Sonata III case that already has a 500W Earthwatt power supply. I am trying to install an ASUS P5K motherboard with a E6750 Core 2 Duo CPU.

I have a similiar question as lepbob. Is the CHA_FAN1/2 and PWR_FAN not connected to the motherboard but to a fan controller?

Also I have some unmatched 6 pin power supply connectors. (They look like the 4 pin one and 24 pin one) What are they for?

Also what does the ucode error mean? (It came up when I tested my OCZ memory)

Thanks in advance

stteng
 
name='stteng' said:
Hi! I am trying to build my PC from scratch (with A LOT of help!). I have an Antec Sonata III case that already has a 500W Earthwatt power supply. I am trying to install an ASUS P5K motherboard with a E6750 Core 2 Duo CPU.

I have a similiar question as lepbob. Is the CHA_FAN1/2 and PWR_FAN not connected to the motherboard but to a fan controller?

Also I have some unmatched 6 pin power supply connectors. (They look like the 4 pin one and 24 pin one) What are they for?

Also what does the ucode error mean? (It came up when I tested my OCZ memory)

Thanks in advance

stteng

Those connectors you speak of, are what supplies power (from power supply) to your motherboard and periphials (Internal USB's, front panel LEDs, Hard Drives, Mouse Keyboard... Am I missing anything? I am going to tell you a story, that my father told me when I was 5. Sware, this is his exact story. Talk about your bed time stories whew! Well anyway, your motherboard is the MOTHER, and must feed all of her children, and the power supply is like breast milk. Mommy has to make sure everyone gets enough to eat, or they will die.... Literally... So first she gets the "milk" from the power supply (4Pin and 24Pin connectors) and then it sends it off to her children. Internal USB's for the front panel. Video card, Sound Card, Keyboard PS/2, Mouse, USB Ports, etc. Mommy feeds them all, and in return they make your computer POST. Everyone is always hungry, so its a good idea to keep a surge protector or "security guard" to make sure that some children don't get more than they should. SWARE his story exactly. It goes on but it just gets more rediculous.... Hope this helped. LOL Welcome to the world of geeks. And my dad, the biggest one.
 
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