Generally, it is set to the Auto mode by default but in some cases, you may have to manually set it to M.2 mode to get the M.2 drive detected. You may have to check your M.2 or PCI-Express slot setting in the BIOS to make sure it is configured to M.2 mode. If you have misplaced your motherboard’s manual then you can also check this info on the motherboard’s manufacturer website by selecting your motherboard model and then going to the specifications section. So, you need to refer to your motherboard manual to check whether any other device is not sharing bandwidth with the M.2 slot having an M.2 SSD plugged in it. In some motherboards with multiple M.2 slots and PCI-Express slots, PCIe slots may share bandwidth with an M.2 slot. It is also true inversely which means if you have a storage drive connected to SATA 5 or SATA 6 port then M.2 slot will not work and your M.2 SSD will not get detected in the BIOS during such a scenario. In some motherboards with a single M.2 slot, SATA 5 and SATA 6 ports share bandwidth with the M.2 slot which means if you insert an M.2 SSD in the M.2 slot then SATA 5 and SATA 6 ports will be disabled. In most motherboards, M.2 slot or slots can share bandwidth with some of the SATA ports or PCIe slots. M.2 Slot Shares Bandwidth with other Ports You can check the M.2 SSD compatibility for your motherboard in the motherboard’s manual or on the motherboard manufacturer’s website by going to the specification section of your motherboard’s model page. So, if you insert an NVMe SSD in an M.2 slot that only supports M.2 SATA SSD then the SSD will not be detected.
So, make sure that the M.2 SSD is installed correctly in the M.2 slot.Ĭheck the SSD compatibility for the M.2 slot on your motherboard because some M.2 slots support only M.2 SATA SSDs, some only NVMe, and some can support both NVMe PCIe and M.2 SATA solid-state drives. Sometimes the M.2 SSD may not make proper contact in the M.2 slot which is one of the major issues faced on the installation side.
To be frank, it is very uncommon to get the physical installation wrong but it may happen with some users especially the ones installing the M.2 SSD for the first time. The M.2 SSD should be inserted properly in the M.2 slot with the label side facing towards you and the M.2 screw should be properly tightened. The first thing to check when your M.2 SSD is not getting detected is that whether the M.2 SSD is installed properly or not in the M.2 slot. Below are the main causes of this issue along with their proper fixes. When your M.2 SSD is not detected in the BIOS then most probably it won’t be recognized in Windows either. It mainly occurs with NVMe SSDs but can occur with M.2 SATA drive too. The M.2 SSD not detected BIOS is the most common issue. Here are the various causes of M.2 SATA or NVMe SSD not being detected along with their fixes or solutions.
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