DirtyAngel But Installer of Solus GNOME 4.5 does Not Work with Orico USB Case and SSD online.
I once tried to install a second system using an .ISO file on an SSD in an external case plugged into a USB port. It didn't work for me. I could never select the remote SSD as the source of the installation. It didn't appear when I pressed F12 during the POST routine at startup. Only internal disks showed up there.
This was on a DELL Latitude, an enterprise level desktop. All Intel. So eventually I came to the conclusion that the computer simply had not gotten to the point where it could recognize an external disk that was connected to a USB port.
Since it was only an experiment -- to see whether I coud do it -- I simply gave up and haven't tried again since then. Did you actually get farther than I did when you tried? Could you see the remote drive listed and select it as the installation medium?