New build - wire management

[FlightMan57]

I Just purchased a new Crosshair V Formula and am in the process of laying out the wiring, I've come across 4 sets of terminals that are unmarked and not shown on the Motherboard layout drawings:


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1. 3 pin header just below the EATX12-1 connector block and CPU_FAN. Labels above and below the 3 pin header are PQ100 and PQ132. Any info?
2. 8 pin header between USB1112 connector and CHA_FAN1 connector. Any info?

3. 4 pin header below CLRTC_SW and just above CHA_FAN2. Any info?

4. 8 pin header above panel header and below the small IROG IC. Again any info?

Being an engineer for many years, I like to know everything about my PCB's and cable interconnects.

I would appreciate any help, advice or useful links.

[HiVizMan]

Communications headers for the engineers - mostly used during the BIOS development and for new hardware testing.

[FlightMan57]

Thanks. Do you have any more information that you could tell me or perhaps direct me to another source with more informations? Thanks again!!!

[Xtreme-Performance]

I noticed also on Rampage IV Extreme I saw a 3 pin set which I don't see in the manual either lol... I thought they were jumpers that I needed to purchase extra jumpers... I guess I can't use the 24 jumpers I purchased cos I mistakenly saw one jumper on the manual but the rests are all fan pins... or PWM cable... hub...