Chasis fan 0 rpm, all new parts, a88xm-a board

[spiralmind]

I'm testing a new build and noticed Bios is returning 0 rpm for the chasis fan. The mobo is a new asus a88xm-a and the new attached case fan is a 3 pin being connected to a 4 pin mobo header. Am I missing something here? Shouldn't I be getting an rpm reading from the fan? The fan itself is definitely working.

My cpu fan reading is good. I was under the impression a 4 pin mobo fan header would still give you an rpm reading if using a 3 pin connection... am I wrong? Or do I have a possibly bad fan header?

I appreciate any ideas or feedback. Just wanting to hear from the community on this one.

 

[raja@asus]

Hi,

1) Is the fan spinning?

2) Can you try it on different headers and see if you get a reading for RPM in UEFI?

-Raja

 

[spiralmind]

Hi,

1) Is the fan spinning?

2) Can you try it on different headers and see if you get a reading for RPM in UEFI?

-Raja

As mentioned previously, the fan itself is definitely working.
This board has only 1 header for the chasis fan.

 

[raja@asus]

Try a different dan ont ehre and see if you get an RPM reading. Also check if there are any UEFI updates for the board and apply.

 

[spiralmind]

Try a different dan ont ehre and see if you get an RPM reading. Also check if there are any UEFI updates for the board and apply.

The board is updated. I would have to order another fan to do this. I'll be contacting ASUS directly instead.

 

[spiralmind]

I'm currently getting conflicting information from the ASUS reps. I'd like to add that when the 4pin CPU fan is connected to this motherboard header (CHA_FAN) the RPM reads fine. Either this board only reads RPM's with fans using a 4pin connector or my board has an issue with 3pin fans.