Question Fan hub without a power cable

[w1nters]

I'm a huge beginner with these things, but I was able to build my PC with help. I got the Lian Li Lancool 205 Mesh C case second hand, and it came with three fans connected to a fan hub. I think we properly plugged it in but they have never spun. Here's a picture of the hub.

https://imgur.com/a/P79srTv

I was told that they're supposed to connect to the motherboard, but I'm not sure if it was done correctly, since the middle cord went into it.

https://imgur.com/a/QGiXWL2

I'm honestly super lost and I think I may need a power cord for the psu but I need second opinions!

 

[Zerk2012]

I'm a huge beginner with these things, but I was able to build my PC with help. I got the Lian Li Lancool 205 Mesh C case second hand, and it came with three fans connected to a fan hub. I think we properly plugged it in but they have never spun. Here's a picture of the hub.

https://imgur.com/a/P79srTv

I was told that they're supposed to connect to the motherboard, but I'm not sure if it was done correctly, since the middle cord went into it.

https://imgur.com/a/QGiXWL2

I'm honestly super lost and I think I may need a power cord for the psu but I need second opinions!

Looks like it takes a Molex power from the PSU to bottom right where it says power.

 

[SkyNetRising]

Fan hub without a power cable
I'm honestly super lost and I think I may need a power cord for the psu but I need second opinions!

Power cable is absolutely necessary.
It will not work without it.

And LED Lights have to be connected in chain.
Lights1,Lights2,Lights3. Do not leave empty spots between them.

 

[w1nters]

Power cable is absolutely necessary.
It will not work without it.

And LED Lights have to be connected in chain.
Lights1,Lights2,Lights3. Do not leave empty spots between them.

i didn't know that! i'll fix it up, thank you

 

[Zerk2012]

i didn't know that! i'll fix it up, thank you

Here is the manual.
https://lian-li.com/product/lancool-205/?cn-reloaded=1