“Got it for my existing Argon ONE for Pi4B. Today I got the M2 SATA SSD and installed it on the expansion board and exchanged it with the existing bottom of the Argon One.
The SSD was recognised immediately and working as expected.
Recommended for users with the original Argon One case for the Pi4B.
Note: the SSD card is not accessible any more from the outside, but it is easy to switch to booting directly from disk without the SD-card.”