A system technician builds a compact workstation using a motherboard equipped with two M.2 storage slots. Slot 1 is connected directly to the CPU and supports NVMe PCIe SSDs. Slot 2 is routed through the chipset and is specified as supporting M.2 SATA drives only. The technician installs a new M.2 NVMe PCIe 4.0 drive into Slot 2. Upon powering on the system and entering the UEFI/BIOS setup, the newly installed SSD is not recognized. Which of the following is the most likely cause of this detection failure?
- The M.2 slot is wired strictly for the SATA protocol, preventing an NVMe PCIe drive from communicating with the host controller.Cevap
- BThe NVMe SSD requires an AHCI driver module loaded into the motherboard firmware before it can be initialized by the BIOS.
- CThe NVMe drive requires a physical B-key adapter to establish electrical contact inside chipset-routed M.2 sockets.
- DThe installed SSD is receiving insufficient power because chipset-connected M.2 slots supply 12V rail power instead of standard 3.3V power.
Cevap
The M.2 slot is wired strictly for the SATA protocol, preventing an NVMe PCIe drive from communicating with the host controller.
Although M.2 SSDs share a common form factor, individual M.2 slots on a motherboard may support SATA signaling, PCIe signaling, or both. Inserting a PCIe NVMe drive into an M.2 slot that supports only the SATA protocol prevents the system from establishing a communication link, rendering the SSD unrecognized in the system setup.
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M.2 Interface and Protocol Compatibility (NVMe PCIe vs SATA)