I am trying to find the manual for my motherboard and can't find it anywhere

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emberfly

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Jul 19, 2015
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I am installing a new power supply and unplugged some front panel things that I didn't realize weren't connected to the power supply (so I didn't need to unplug them). Problem is I don't know where they were plugged in! 🙁

My motherboard says on it M5A97 EVO_DP/CM1855/DP_MB

I believe this to be the name of the motherboard(?). I searched on google for the manual and could not find one at all. Even on the Asus website. I saw a picture of a motherboard that looked very similar to the one I have, but not the same. But still no manual for that one.
 
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The Paladin
There is no book or diagram for this but let compare both, this will and probably sounds obvious and perhaps "talk down to you" please do not take it this way, I am French and English is my second language and sometime I come across condescending but I am truly not.

you will have to do detective work that none of us can help with. I can point out what may be the obvious for you at this time, but neither of us know the tech knowledge so I will just go through motions to cover everything I know that can possibly help you getting all these things sorted out. having transferred Asus boards to Custom cases the problem being reversed but method remains.

NB: you will have to take the pins out from the connectors, and wrap a little...
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Thank you for your continued efforts. That one is also the 2.0. You can tell very easily because each of these manuals you are linking has 2 PCIE x16 slots. The version I have only has 1.

edit:

I may be able to get by without the manual if you can help me figure out where these might plug into (here are the images again):

http://imgur.com/a/zfMSk

edit:

You can notice from my image that I only have one PCIE x16 slot, unlike the manuals.
 
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I am using a prebuilt machine. It appears that the computer is called a CM1855, by Asus I assume. I don't know the name of the case they used.

Edit:

This is it exactly:

https://www.asus.com/us/Tower-PCs/CM1855/
 
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Ah didn't mentiopn the prebuilt part. Good luck then. lol. So what does work and doesn't? Help figure out what they could be. Prebuilts use their own weird connectors and it's a pain to match up. Sometimes you have to take the whoile thing apart and mix and match and plug each pin on. just swapped my roomies pc from a dell to a regular case and it took a bit but we finally got it all working.
 
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What do you mean?


I assume the 5-1 pin is for some sort of USB slot since the wire says "USB Revision 2.0." But I don't see a slot on the motherboard for a 2.0. Only for 3.0. So I don't know where to put it 🙁

For the 20-1 pin connector, I assume that goes on the 20-x pin labeled "panel" (it's missing a lot of pins. Don't remember how many, but from memory it could be like a 20-8 pin or something). It fits in that slot, but remember that's the double-headed connector that also has that 10-1 pin connector (please see the pictures I posted if this is confusing -- here they are a third time http://imgur.com/a/zfMSk). The 10-1 pin connector seems to plug in NOWHERE. Is that sometimes the case with motherboards? Should you have a connector randomly floating around your case not plugged into anything?

Only the USB 2.0 wire is labeled. The other wire is not labeled at all.


Do you think it would be easier for me to just get a new case?
 
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It seems that motherboard only exists as one made for ASUS built PC's by ASUS. There is no retail EVO version with only 1 PCI-E, but ASUS trying to maximize profits made a slimmed down version for their PC's.

It's also possible and safe to assume that since they custom made that MB for their own cases, the pin headers will not conform to the standard or the norm.


Yes a new case is by far easier. lol. But with some trial an error you could get everything working.
 
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I see. That makes sense. I'm sorry for the wild goose chase earlier.


That sounds like good news (?) so trying something that doesn't seem right may actually be right.



Do I risk breaking or damaging anything by trying to turn the computer on with things plugged into the wrong places?
 
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There is no book or diagram for this but let compare both, this will and probably sounds obvious and perhaps "talk down to you" please do not take it this way, I am French and English is my second language and sometime I come across condescending but I am truly not.

you will have to do detective work that none of us can help with. I can point out what may be the obvious for you at this time, but neither of us know the tech knowledge so I will just go through motions to cover everything I know that can possibly help you getting all these things sorted out. having transferred Asus boards to Custom cases the problem being reversed but method remains.

NB: you will have to take the pins out from the connectors, and wrap a little electrical tape on each metal lead and you will have to pin them manually. but wait before you proceed. read further.

1. the front panel cables run to the options listed on this page of the manual
https://www.manualslib.com/manual/412291/Asus-Cm1855.html?page=11#manual &
https://www.manualslib.com/manual/412291/Asus-Cm1855.html?page=12#manual

And this is as useful as the manual is, but my point is you will and should pop that front bezel, and trace each group of wires, I suspect on the block of 2 connectors that will be your pwr led hdd led etc. basically look at colour of the wires and trace them back to each item on the main bezel, I could be wrong, I cannot see the other end of wires and what red, black, green etc.. are connected to.

2 .looking at the board, the diagram for the I/O connector is simple to find I understand we do not seem to find the EXACT manual for your board, but trust me when I say 99% of the boards use a extremely similar configuration for years now. now looking on page https://www.manualslib.com/manual/889515/Asus-M5a97.html?page=26#manual
the connector pictures below is what will permit you to find a home for the paired wires you have discovered in step 1.

mBdY8CQ.png


use pen to paper to marks colour wires to track them down. the manual pages show the other connectors and such, and it is possible that 4 pin is a usb 2 connector just a different connector format than the industry standard is currently, (HP., Dell., ASUS and Acer pre built are design on purpose this way to force people to keep cases. ) could be led and speaker wires for all we know.. again tracing the wires will reveal their function

there is no easy way out of this I am afraid an patience will be your guide... if you cannot identify a location where a set of wires are supposed to go, keep us appraised we are here to help.

now to address you question about " will I break anything.. " if the tips are covered and do not touch each other by this protection you will not break anything, But power is power, short leads (negative on positive) can cause things to not work. black is normally ground in any electrical and red is hot wire. , ALWAYS disconnect the power supply from power and give it a minute to dissipate before messing with wires.

gluck.
 
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