The Argon ONE M.2 brings native M.2 SSD support to the Raspberry Pi 4, along with full-sized HDMI ports and a software-controlled fan. The useful features from the Argon ONE remain too, including its stylish design. The Argon ONE M.2 is available for US$45.
https://www.notebookcheck.net/Raspberry-Pi-Bring-M-2-SSDs-full-sized-HDMI-ports-and-active-cooling-to-the-popular-single-board-computer-with-the-Argon-ONE-M-2.497598.0.html
That looks like a great (and good-looking) case to use for a Pi4 server. Put the OS on the m.2 drive for fast boot speed and attach a USB 3 NAS with 2 or 4 drives over the leftover USB 3 port for storage.
That would be Direct Access Storage DAS not NAS. It would become a NAS when combined with the pi.
Can this run Plex?
windows-10?