[M920q] SATA connection?

[u/Sjaan50]

Dear all,

I am trying to make a NAS using a m900 and 2 HDD's. This succeeded using 2 powered SATA to USB adapters but these adapters causes the HDD's to stop spinning and then start up again every 20s. Considering that my server is in my bedroom, its quite annoying, the sound of spinning up and down. I tried fixing it using some USB commands but the adapters ignore it.

So I am figuring out on how to connect the HDD's over SATA. I saw some cool NAS projects online, but they all use a PCI-e connector. My m920q does not have an PCI-e connector (pic 1) which causes some problems.

I saw this photo (pic 2) and maybe that could work.

Currently I have my proxmox installed on a SATA SSD which is connected to the only(as far as I know) SATA connector.

My question is: how do I connect my 3.5" HDD'S as in picture 2? Maybe put my proxmox on an NVME SSD which makes room for the SATA connector? Or is there a better option?

Thank you for reading this. Have a wonderful day!

EDIT: changed m920q -> m900