NVMe SSDs not detected on Asrock z370 taichi

Hi,

I currently have a setup that uses an NVMe M.2 SSD and a SATA M.2 SSD.

I recently purchased a new NVMe M.2 SSD for additional storage. However, I had trouble getting the drive to be detected by the BIOS and by windows. After removing all SATA drives to prevent any conflicts, I began swapping out the NVMe drives multiple times. I managed to get the new SSD to be detected. However, then my older SSD was not being detected.

I realised that my NVMe SSDs are not detected when mounted in the M2_1 and M2_2 slots on my Asrock Taichi Z370. They are only detected in BIOS and windows when mounted in M2_3

I have never used NVMes in M2_1 or M2_2. I've only ever used a SATA in M2_2. The NVMe I had before was always in M2_3.

Is there anything else I'm missing or can try or are my M.2 slots broken?

- 6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1, RAID 5, RAID 10, Intel® Rapid Storage Technology 15), NCQ, AHCI and Hot Plug* - 2 x SATA3 6.0 Gb/s Connectors by ASMedia ASM1061, support NCQ, AHCI and Hot Plug - 2 x Ultra M.2 Sockets (M2_1 and M2_2), support M Key type 2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)** - 1 x Ultra M.2 Socket (M2_3), supports M Key type 2242/2260/2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)** *M2_1, SATA3_0 and SATA3_1 share lanes. If either one of them is in use, the others will be disabled. M2_2, SATA3_4 and SATA3_5 share lanes. If either one of them is in use, the others will be disabled. If M2_3 is occupied by a SATA-type M.2 device, SATA3_3 will be disabled. **Type 22110 M.2 module is supported with either M2_1 or M2_2 socket. Supports Intel® Optane??Technology Supports NVMe SSD as boot disks Supports ASRock U.2 Kit

From the Z370 Taichi specs page.