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Motherboard won't detect known good SSDs

Level 7
Graphics: Gigabyte GTX 1080

Motherboard: ASUS ROG Crosshair VIII Hero X570 ATX

CPU: AMD Ryzen 9 3900x

HD: SanDisk SSD Plus (New, for OS) and Ultra II ("old", for extra storage)

After a series of other issues (to include a failed SSD), I finally got to a point where I could just start from scratch on a new SSD. Loaded up Win10 boot on a USB, and that works fine. But when I go to install, no devices are detected.

SATA in BIOS is set up to AHCI not RAID, and I can even see that it is able to detect the optical drive. I have swapped out the SATA data and PSU cables, changed data ports, and I know the SSD is good because I hook it up to my laptop via SATA to USB and all is good.

When at the Windows install screen, I bring up diskpart and only the USB (I assume, shows 30gb, 32gb drive) shows, even with my extra storage drive plugged in.

Is my motherboard just busted? It is maybe 6 months old.