H105 on Maximus Ranger

Hi , I've seen a number of threads on this and related.

I want to start at the beginning:



1st screenshot is from the manual:





2nd screenshot is from next page of manual









Ok first question:

On the motherboard layout there are 4 fan headers:

I've looked closely

cpu, opt-cpu , chassis fan2 on (L), chassis fan3 (R)



In the manual , on the 3rd line of layout contents

There are supposed to be 5

cpu, opt-cpu, Chassis fans 1-3





Many of us are having issues, because we want to be able to control or disable fan-control in BIOS and elsewhere ,

I see a chassis fan 1 in BIOS, but can't see it on mother board.

CPU-OPT is not available in BIOS to control



Lets first of all ask about the manual

Can we agree there is no Chassis_Fan 1 on the motherboard



Really appreciate help here folks

without getting this right, games, overclocking etc

is built on a rocky foundation



Good news:

Chassis fan 2 + 3 are easy to set up, they go to my front and back fans

set to DC, set to control via MB,

Its the CPU-OPT and CPU that are tricky~and where is this chassis fan 1 coming from?