Question FAN connections.

sargan

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Jul 4, 2012
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On my Gigabyte X670E Aorus Elite
The 4 fan connectors are at bottom of motherboard, SYS_FAN 1/2/3/4
Unfortunately, 2 of the pre-installed Case fans have leads that are too short to reach these connectors.

2 options ...
There are 2 fan connectors on right hand side of the board that they can reach, although only 2 x 4 pin connectors are labelled as
SYS_FAN/5/6/7/8_pump
Can I use these for the case fans ?
If so, do they work OK as standard (I seem to recall you have to set them to be pump (full on) if used for pump)

Or do I need to get a fan extension cable (presumably a Y cable)

CPU fans are fine connected to CPU_FAN connector via a Y cable.
 
What case fans are we looking at here?

There are 2 fan connectors on right hand side of the board that they can reach, although only 2 x 4 pin connectors are labelled as SYS_FAN/5/6/7/8_pump
I can see SYS_FAN2 and SYS_FAN3 on the right of the motherboard's PCB.

Can I use these for the case fans ?
Yes you can. You will need to manage the fans' RPM in BIOS.
 
On my Gigabyte X670E Aorus Elite
The 4 fan connectors are at bottom of motherboard, SYS_FAN 1/2/3/4
Unfortunately, 2 of the pre-installed Case fans have leads that are too short to reach these connectors.

2 options ...
There are 2 fan connectors on right hand side of the board that they can reach, although only 2 x 4 pin connectors are labelled as
SYS_FAN/5/6/7/8_pump
Can I use these for the case fans ?
If so, do they work OK as standard (I seem to recall you have to set them to be pump (full on) if used for pump)

Or do I need to get a fan extension cable (presumably a Y cable)

CPU fans are fine connected to CPU_FAN connector via a Y cable.
Sure, that's what SYS_FAN connectors are for. More than likely is that one 8/Pump can be set for either use.
 
The labelling is not relevant. What matters is how the connectors are controlled. If you are able to access the motherboard's bios (or if there is a manual for the motherboard's bios) you can determine how each connector is controlled, (e.g. cpu temp or motherboard temp, etc.) and what ability you have to set a fan curve for each connector.
 
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It was just the 'pump' wording that had me concerned.
In general, headers marked as just pump or W_PUMP provide more power thru headers to use with custom liquid coolers and are adjustable for operation mode (PWM or Voltage regulation) and speed. Those with AIO_PUMP headers are usually only full speed. In any case, pumps are just a motor same as in fans and work and are adjusted same way.