220-1101 Hardware Practice Question
A technician is installing a new M.2 NVMe SSD in a desktop computer. After installation, the computer boots to the BIOS/UEFI, but the SSD is not listed in the boot device list or among the storage devices. The technician has confirmed the SSD is properly seated in the M.2 slot and that the motherboard supports NVMe drives. Which of the following is the MOST likely cause of this issue?
⚠ Common exam trap
The trap here is that candidates often suspect a defective SSD or improper seating, but the CompTIA 220-1101 exam tests knowledge of BIOS/UEFI configuration settings, specifically that M.2 slots may need to be switched from SATA to PCIe mode to detect NVMe drives.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The M.2 slot is configured for SATA mode instead of NVMe/PCIe mode in the BIOS/UEFI.
The most likely cause is that the M.2 slot shares bandwidth with certain SATA ports, and installing the NVMe SSD disables those SATA ports, which may cause the SSD itself to not be detected if the slot is configured for SATA instead of NVMe. Additionally, some motherboards require a BIOS setting to explicitly enable PCIe/NVMe on the M.2 slot. Since the SSD is properly seated and the motherboard supports NVMe, a resource conflict or BIOS configuration issue is more probable than a defective drive.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The M.2 slot is configured for SATA mode instead of NVMe/PCIe mode in the BIOS/UEFI.
Why this is correct
M.2 slots often share bandwidth with specific SATA ports; occupying those ports can disable the M.2 slot, preventing detection of the NVMe drive.
- ✗
The NVMe SSD requires a SATA data cable to be detected by the system.
Why it's wrong here
An unformatted SSD is still detected by the BIOS as a storage device; formatting is only required for the operating system to use the drive.
When this WOULD be correct
When the SSD is detected in BIOS but not shown as a boot option, and the technician needs to enable UEFI boot or disable CSM to make it bootable.
- ✗
The system's RAM is incompatible with the NVMe SSD.
Why it's wrong here
While Legacy BIOS mode might have issues with NVMe, most modern systems still detect the drive; this is less common than a bandwidth-sharing issue.
When this WOULD be correct
This option would be correct if the question stated that the motherboard's M.2 slot only supports SATA protocol, and the installed drive is NVMe, which would be incompatible.
- ✗
The SSD must be formatted with NTFS before it can appear in the BIOS.
Why it's wrong here
A defective SSD is possible but should not be the first assumption; other common causes like port sharing should be checked first.
When this WOULD be correct
This option would be correct if the question described an SSD that is detected in BIOS but not visible in the operating system's disk management, or if the OS fails to boot from the drive due to missing NVMe drivers during installation.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 220-1101 exam frequently reuses these exact scenarios with slightly different constraints.
✓The M.2 slot is configured for SATA mode instead of NVMe/PCIe mode in the BIOS/UEFI.Correct answer▾
Why this is correct
M.2 slots often share bandwidth with specific SATA ports; occupying those ports can disable the M.2 slot, preventing detection of the NVMe drive.
✗The NVMe SSD requires a SATA data cable to be detected by the system.Wrong answer — click to see why▾
Why this is wrong here
The SSD is not listed in BIOS/UEFI at all, not just missing from the boot list. This indicates a detection issue, not a configuration problem like boot order or legacy mode.
★ When this WOULD be the correct answer
When the SSD is detected in BIOS but not shown as a boot option, and the technician needs to enable UEFI boot or disable CSM to make it bootable.
Why candidates choose this
Candidates may confuse a detection failure with a boot configuration issue, assuming the drive is recognized but needs to be set as the first boot device.
✗The system's RAM is incompatible with the NVMe SSD.Wrong answer — click to see why▾
Why this is wrong here
The M.2 slot is already confirmed to support NVMe drives, so a SATA-only M.2 slot is not the issue. The problem is more likely related to BIOS settings or drive initialization.
★ When this WOULD be the correct answer
This option would be correct if the question stated that the motherboard's M.2 slot only supports SATA protocol, and the installed drive is NVMe, which would be incompatible.
Why candidates choose this
Candidates may confuse M.2 slot compatibility, assuming all M.2 slots support both SATA and NVMe, or they may overlook that the technician already confirmed NVMe support.
✗The SSD must be formatted with NTFS before it can appear in the BIOS.Wrong answer — click to see why▾
Why this is wrong here
The SSD is not listed in BIOS/UEFI at all, indicating it is not being detected. A missing driver would not prevent detection in BIOS; drivers are loaded by the operating system after boot. The issue is at the hardware/firmware level.
★ When this WOULD be the correct answer
This option would be correct if the question described an SSD that is detected in BIOS but not visible in the operating system's disk management, or if the OS fails to boot from the drive due to missing NVMe drivers during installation.
Why candidates choose this
Candidates may confuse the need for NVMe drivers during OS installation with the BIOS detection phase, assuming that drivers are required for the BIOS to recognize the drive.
Analysis generated from the official 220-1101blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Go deeper
Related to this question
Learn chapter
Optical Drive Types: DVD, Blu-Ray
Key term
Unified Extensible Firmware Interface
UEFI is the modern replacement for BIOS that controls how a computer starts up and loads the operating system.
Key term
Peripheral Component Interconnect Express
PCI Express (PCIe) is a high-speed expansion bus standard that connects internal hardware components like graphics cards, SSDs, and network adapters to a computer's motherboard.
About these practice questions
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1101 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1101 exam.