B550 Phantom Gaming-ITX/ax NVME recognition

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   I cannot install two NVME drives on my motherboard.  The CPU is a Ryzen 5 5600x, and both NVME drives are Samsung, and are on the approved list.  If I install one drive only, it is recognized whether it is installed in the main slot or in the back.  Either NVME drive can be recognized if one drive is installed, but when I attempt to install both NVME drives one is always locked out.

I reviewed BIOS settings but could not identify if any configuration options were relevant to this issue.  I know one NVME slot is driven by the CPU and I believe the back slot is driven by the chipset.  This should work, but I'm clueless as to what is preventing me from using both NVME slots.  Guidance would be greatly appreciated.

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rg500g Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 30 Nov 2019 Status: Offline Points: 142	Post Options Post Reply Quote rg500g Report Post Thanks(0) Quote Reply Topic: B550 Phantom Gaming-ITX/ax NVME recognition Posted: 11 Apr 2022 at 11:44pm
	I cannot install two NVME drives on my motherboard. The CPU is a Ryzen 5 5600x, and both NVME drives are Samsung, and are on the approved list. If I install one drive only, it is recognized whether it is installed in the main slot or in the back. Either NVME drive can be recognized if one drive is installed, but when I attempt to install both NVME drives one is always locked out. I reviewed BIOS settings but could not identify if any configuration options were relevant to this issue. I know one NVME slot is driven by the CPU and I believe the back slot is driven by the chipset. This should work, but I'm clueless as to what is preventing me from using both NVME slots. Guidance would be greatly appreciated.

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8922	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Posted: 12 Apr 2022 at 2:34pm
	Dear rd500g, Thank you for the posting. There are some suggestions below for you to verify the system. 1. Clear CMOS by referring to user manual page. 26. User manual: https://download.asrock.com/Manual/B550%20Phantom%20Gaming-ITXax.pdf 2. Only install CPU, PSU, Cooler, RAM, Graphic card, SSDs and boot into BIOS\Advance\Storage Configuration to check if the SSD appears under this page. 3. Update the BIOS to latest version. 4. If possible, please use other SSDs to cross test. For further assistance, you can use our support form to contact us. https://event.asrock.com/tsd.asp Thank you, Best wishes, ASRock TSD