Motherboard front panel connectors and case front panel are different

[Sky_Powder]

Hello. Recently I bought a Dell optiplex 990 and I decided to out it in a new case. I got everything but the front panel connectors installed, and realised they where different. On the motherboard, the power button connector is a 5 pin connector, and the USB, audio, and hard drive LED's are all bundled into a 34 pin connector. Now my case has all the new front panel connectors, so idk what to do. Please help

 

[Barty1884]

Which model specifically? Unless you can find a definitive diagram showing the pins to use, it'll be a bit of trial & error - but you should be able to get it to work (other than the reset button, as Dells usually don't incorporate those buttons).

Can you post a pic of your motherboard?

 

[caamsa]

A lot of those pre-built systems are proprietary and you can't put them in another case.

 

[Barty1884]

A lot of those pre-built systems are proprietary and you can't put them in another case.

More often than not, you can transplant to another case, It's rarely easy though.

PM from the OP

I've looked on dells website, and there is no specific model, but all I know is it's a optiplex 990 motherboard
Here are the images
https://postimg.org/image/g9vrv4n8h/
https://postimg.org/image/7hclu2eg7/
https://postimg.org/image/eala2fjaf/
https://postimg.org/image/xeuyfycgx/

This pic concerns me. I've never seen a FPanel connector look like that.

Dell do not document the pin layout..... so ultimately, you're going to have to try to connect it in various spots and perform routine trial & error.

 

[Sky_Powder]

So after about 7 hours of reworking things, I managed to succesully swap cases from a prebuilt to a new case. For people wondering how, let me tell you something. If you want it to be simple, just buy a new motherboard, it's way easier. But, if you want to know how I did it, I had to take out the power button iff the new case, and use that as my power button which is hooked to the back of my case. I then had to take the motherboard fan and hook that up so I don't get mobo fan errors. Then I had to remove my CD drive and replace it with my old front panel headers to get them to work. This took me so long to do, and in my opinion, just get a new motherboard.