Can't see ssd drive in QNAP 471

Hi there, I am an absolute beginner in working with a qnap nas, I want to install Roon on my ssd drive.
My setup is as follows : Qnap 471 with 250 gB ssd and 3x4GB wd red harddisks, which are in RAID 5.
But I don’t see my SSD , can someone help me out with this.

This might sound silly but make sure you have pushed the SSD in far enough to connect.

I believe it says you have 4 disks and the icons are square for the SSD and round for the 3 hard disks, so it looks like it’s plugged in correctly and detected. :thinking:

You need to assign the ssd storage to a new static volume.

Thanks Christopher, that did the trick.