Any Adapter Suggestions?

[MidRangeGamer]

So I recently bought a new PC to enter the world of gaming and threw my Pentium 4 trash away (Man, such a good feeling to upgrade)...

So I bought a Dell Optiplex 7020 Mini Tower for 50$ (44.74 Euros) that comes with:
-Core i5-4590 (Can upgrade to i7-4770/4790 for an additional 30$)
-1600 MHz 2x4 (8) GB RAM
-Default unbranded Chinese 290w PSU No certification
-Dell Inc. 08WKV3 A00 Motherboard with intel Q87 Chipset

So I also bought a Used Sapphire Pulse Radeon RX 570 4 GB for 80$ (71.59 Euros)
So the Problem is that after I bought the GPU I needed to buy a new PSU, I bought Corsair CX550 For 65$ (58.17 Euros) But after I bought it I found out that I can't plug it in because the PSU has a 24 Pin connector when the motherboard only comes with an 8 Pin connector...

Here's what's important, My friend told me that I should buy a standard 24 pin to 8 pin Adapter for the PSU to work with the motherboard, but he kept warning me that it can burn my PSU and motherboard and all...
So what I want to know, Do you have any suggestions for a reliable adapter I can use for my Optiplex that wouldn't cause any problems?

 

[freddie64]

Hi and welcome to the forums.

Not allowed to link directly to what you want, but if you Google

24Pin to 8Pin Power Adapter Dell Optiplex 9020 T1700 Motherboard Converter Cable

This should do the job.

 

[MidRangeGamer]

Hi and welcome to the forums.

Not allowed to link directly to what you want, but if you Google

24Pin to 8Pin Power Adapter Dell Optiplex 9020 T1700 Motherboard Converter Cable

This should do the job.

The problem here is that there are many types of the 24 pin to 8 pin connector, So which one is the most reliable? would you please give me an in-direct link for it or something?

 

[freddie64]

Sorry i have never used one.

I just searched for the adapter and that is what came up.

It does say on product pages "Compatible with: DELL Optiplex 3020 7020 9020 T1700"

Again, we are not allowed to give links and i have already had a warning for hinting so not gonna push my luck.

As for reliability. I would choose one that has a high user rating and take a chance on that one.

Sorry i can't be any more help.