[SOLVED] PCI-E cable problem

Solution
- that's the cable itself, I believe it's just a normal pci-e 8 pin cable
No.

There is no standardization among modular PSU's and their connections.

At the component end, yes.
At the PSU end, no. Not even a little bit.

You were very very lucky in that it did NOT plug in.

You need the exact cable that this particular PSU came with.
There's no such thing as a "normal" modular cable. They're not standardized on the end that connect to the modular PSU. You can't just buy a modular cable and stuff it in, it has to be confirmed to work for your exact model of PSU. Pinouts and shape differ; when using a modular cable that isn't confirmed to work for you, the best-case scenario is that it doesn't fit, the worst-case scenario is that you no longer have a PC after you turn it on.
 
- that's the cable itself, I believe it's just a normal pci-e 8 pin cable
No.

There is no standardization among modular PSU's and their connections.

At the component end, yes.
At the PSU end, no. Not even a little bit.

You were very very lucky in that it did NOT plug in.

You need the exact cable that this particular PSU came with.
 
Solution
Ok, got it, thanks a lot to everyone! But I have my next question already... How do i google the cable i need, because i can`t find anything that fits. I want to connect the 2x8-pin GPU to Deepcool Aurora DA700...
 
Really, if you can't find anything on Google, you'll likely have to contact Deepcool for help obtaining a replacement if you no longer have the one it came with. While lots of popular PSUs will have available aftermarket cables, this PSU is a rather mediocre group-regulated PSU, so there's little hobbyist interest and thus, it's not profitable for companies to produce compatible cables. So it's a bit of work to find a replacement; if Deepcool doesn't help and you can't find one online, your options become to replace the PSU or find someone selling an old broken DA700 cheaply and using the cable.