Second GPU Not detected

[aeminkocal]

Hello,
I recently bought MSI MEG Z790 Ace Max and i9 14900K.
I installed 4xnvme + 1x4090.
My motherboard supposedly support 2 GPUs.
But when I plug the second gpu, which is 3090, it does not see it.
And sadly I need it because I am working on AI systems.

What could be the issue?

[Average Nerd]

What slots did you put the drives and GPUs in?

[DoctorNick]

10 minutes ago, aeminkocal said:

Hello,
I recently bought MSI MEG Z790 Ace Max and i9 14900K.
I installed 4xnvme + 1x4090.
My motherboard supposedly support 2 GPUs.
But when I plug the second gpu, which is 3090, it does not see it.
And sadly I need it because I am working on AI systems.

What could be the issue?

Are you using slot M2_4 for the 4th SSD? Try using M2_5

[aeminkocal]

1 minute ago, Average Nerd said:

What slots did you put the drives and GPUs in?

M2_3 was empty, the others are full. 
 

 

1 minute ago, DoctorNick said:

Are you using slot M2_4 for the 4th SSD? Try using M2_5

Okay, as you think that M2's are causing the issue, I'll try removing them one by one once I get home (in 6 hours) and will update this topic about it.

[DoctorNick]

13 minutes ago, aeminkocal said:

M2_3 was empty, the others are full. 
 

 

Okay, as you think that M2's are causing the issue, I'll try removing them one by one once I get home (in 6 hours) and will update this topic about it.

Remove the one in slot M2_4 

Edit: Manual page 33 + 34 https://download.msi.com/archive/mnu_exe/mb/MEGZ790ACEMAX_EN.pdf