I have been using external 5.25" bay to house 2.5" hds and SSDs. In newly assembled machine, in addition to the 5.25" bay I placed two M.2 NVMe SSDs in an 3.5" external bay. I used the M.2 socket to SFF-8643 connecter to interface M.2 socket on the motherboard and the M.2 NVMe SSDs. The two M.2 devices are recognized by Disk Mngment as shown.
I could restore W10 backup but it fails to boot. Error message was "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key"
I could access the M.2 devices from W10 which was booted from the SATA SSD. Read speeds were about 1GB/s and 1.5GB/s respectively thus not as fast as they are supposed to be.
Ryzen 5 5600X cpu on Gigabyte AORA X570 Ultra motherboad is used for this machine.
Any suggestion is appreciated.