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Chassis Fans - Please help

Hi P
By Hi P
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Go to solution Solved by WoodenMarker,

The h_amp header is a header that supports up to 3A as opposed to 1A for the rest of the motherboard fan headers. It's for fans or pumps that require more power.

The ext_fan header is for a fan extension card for more headers: https://www.asus.com/us/Motherboard-Accessory/FAN-EXTENSION-CARD/

Splitters are fine as long as you're not using more fans than the splitter can provide. For unpowered splitters, this will depend on the header the splitter is plugged into -- usually up to 1A. Ex: https://www.amazon.co.uk/Akasa-AK-CBFA04-15-Splitter-Cable-Fans/dp/B005FWXWPS

For splitters with an additional molex or sata power connector, they can be plugged into the psu for additional power and can support more fans. Ex: https://www.newegg.com/Product/Product.aspx?Item=2MV-0035-00001

Splitters duplicate the signal from the header the splitter is plugged into to connected fans. 

Posted

I plan to get the Asus ROG Crosshair VII Hero (Wifi), it apparently has:

 

- x3 Chassis Fan Connectors

- x1 H_AMP Fan Connector

- x1 EXT_Fan Connector

 

I understand the first one, and I know the other two are High Ampere fan connector and Extension Fan connector, but I don't know what they are for, could someone please explain?

 

1.- If I want 6 PWM fans but I only got 3 chassis fan connectors, what do I do?

 

2.- Are PWM splitters safe?

 

3.- If they are, is there any recommended brand?

 

4.- Are all fans connected to a splitter controlled at the same speed?

 

5.- Is there a limit as to how many fans can I connect to a single chassis fan connector using a splitter?

 

6.- How do I know such limit?

 

Thank you very much in advance!

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23 minutes ago, Alexsolo said:

There's 8 total on your board.

Connecting the fans to AIO PUMP, CPU OPT won't make a difference, you can set the speed to follow a specific fan curve or set them manually anyways. 

 

Thank you so much!

 

So I can connect 7 PWM fans? (without counting the CPU fan connector)

 

Do you have information on the questions 2 to 5? (just wondering in case I ever need a splitter)

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The h_amp header is a header that supports up to 3A as opposed to 1A for the rest of the motherboard fan headers. It's for fans or pumps that require more power.

The ext_fan header is for a fan extension card for more headers: https://www.asus.com/us/Motherboard-Accessory/FAN-EXTENSION-CARD/

Splitters are fine as long as you're not using more fans than the splitter can provide. For unpowered splitters, this will depend on the header the splitter is plugged into -- usually up to 1A. Ex: https://www.amazon.co.uk/Akasa-AK-CBFA04-15-Splitter-Cable-Fans/dp/B005FWXWPS

For splitters with an additional molex or sata power connector, they can be plugged into the psu for additional power and can support more fans. Ex: https://www.newegg.com/Product/Product.aspx?Item=2MV-0035-00001

Splitters duplicate the signal from the header the splitter is plugged into to connected fans. 

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
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