How to add a USB-SSD

Hi, I am new to truenas scale.
The OS is installed on a Thinclient 630 with 128GB SSD inside.
I have got the UI setup now and even the remote access.
But now I am in somekind of thinking-loop.
I have attached an USB-FAT32 -SSD to make a pool.
But it seems the SSD is not a VDEV, for that I need a pool and to make a pool I need a VDEV…I think. So, in my head that is a bit of a loop.
In the storage-dashboard I can see the SSD as Unassigned disk.

Who can help me in how I can get this done ?

First, using USB devices for storage is strongly discouraged. You should check the hardware requirements section of the documentation.

That being said you click on “create pool” and then create a VDEV from that single disk. The FAT32 file system will be replaced by ZFS because that is the only file system TrueNAS supports.

HTH,
Patrick

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