5.1 Sound system on PC

[SarumanTheWhite]

I am trying to use these speakers on my computer. But can't get it to work as i want and i am anxious because some people said this would cause harm on my motherboard or it's soundcard.
Motherboard is gigabyte z97 d3h rev1.1 with win 7 x64 installed :

System is this part ( Subwoofer ? Amplifier ? ) with 5 speakers around :

I have connected all speakers to the output sockets and only a single green jack comes out from
these two input sockets :

Now, the problem is, whenever i put this jack into one of those sockets behind the motherboard, only 2 speakers work out of 5. Just different speaker combination on different sockets and i couldn't hear any sound from the main component at all ( Subwoofer ?, Amplifier ? ). But, whenever i put this jack into the headphone socket on front panel, all speakers work except that main component. Shouldn't the green socket behind the motherboard also make all these speakers work just like the headphone socket on front panel ?

How can i make them all work on back panel ?

The device has a power cable itself that is plugged into another power socket, how can it damage my computer when it draws the power from an external source ?

 

[getochkn]

Its not a true surround system, it just simulates surround from a usb or SD card as its drisgned for. The green input will only ever give 2 channels. Somewhere in the settings for the speakers there should be something to get all the speakers to play but it will be simulated surround

 

[SarumanTheWhite]

Its not a true surround system, it just simulates surround from a usb or SD card as its drisgned for. The green input will only ever give 2 channels. Somewhere in the settings for the speakers there should be something to get all the speakers to play but it will be simulated surround

I don't know how surround system actually sounds like. I just want to use these speakers, like any other pc speakers, all at once.
What i'm trying to mean is, with this setup, only two speakers work :

With this setup + '' Mute the rear output device, when a front headphone plugged in '' option checked, all speakers work :

But, it's the headphone jack in front-panel and i don't want cables hanging in front of me.

It looks like the device defined as '' headphone '' in windows, can feed as many speakers as you plug. But backpanel sockets are divided into 3 separate devices which refer to only 2 speakers ( front L-R, rear L-R etc. ). Maybe some kind of tweak to make windows mistake '' front speakers '' as '' headphone '' ?

Also is it wise to use this system on a pc ? Can it harm my motherboard/soundcard ?

 

[getochkn]

Surround speakers, for 5 speakers + a subwoofer need 6 inputs. You are only supplying two because that's all the device allows, thus you won't ever get surround sound out of it. It's a cheap system with some speakers, but it doesn't allow that many inputs.

The best you can is try toggling through the EQ modes with the EQ button and see if the other speakers kick in, but again, it's not a surround system and you won't get surround out of your PC.

And no it won't hurt anything.

 

[SarumanTheWhite]

Surround speakers, for 5 speakers + a subwoofer need 6 inputs. You are only supplying two because that's all the device allows, thus you won't ever get surround sound out of it. It's a cheap system with some speakers, but it doesn't allow that many inputs.

The best you can is try toggling through the EQ modes with the EQ button and see if the other speakers kick in, but again, it's not a surround system and you won't get surround out of your PC.

And no it won't hurt anything.

But, when i pick headphone from this window :

All 5 speakers + subwoofer work at once, only with one cable connection between pc and system.

But this window only pops-up when i plug the jack into front panel. If i plug it into one of back panel sockets, it doesn't pop up and automatically sets one of the options below '' headphone '', thus play only 2 speakers, different sockets - different 2 speakers, but not all at once like with '' headphone '' option.
'' headphone '' option in this case works like the combination of all '' front speaker out, rear speaker out, center/subwoofer speaker out, side speaker out '' and i want to somehow be able to pick '' headphone '' option when i plug the jack at backpanel.