Thanks KCYeah! I exchanged the SSD that didn’t have the proper key fitting for the Argon M2 case. I bought this Samsung 250gb. Actually they only had this and the 500gb.
Samsung 860 EVO 250GB SSD 3-bit MLC V-NAND SATA III 6Gb/s M.2 2280 Internal Solid State Drive - Micro Center
And then bought a USB 3 male A to male A. Hooked up the bottom of the argon case and flashed the latest (today) 64 bit RPi4 for the 4gb. Everything was fast. I was up and running within 20 minutes.
Just plugged in my husbzb and it must have an internal memory since it retained all my zwave and zigbee devices. Just had to rename them.
This is so much faster than the Pi 3 I initially was running. That one is going to be setup at my parents place. I think eventually it may get replaced by a Pi 4 or 5 whatever is out then. And of course with an ssd.