220-1101 Hardware Practice Question
A technician is building a gaming PC. The motherboard has a PCIe 4.0 x16 slot occupied by a PCIe 3.0 graphics card, and an M.2 slot that supports PCIe 4.0 x4. The user wants to install a high-performance NVMe SSD. Which of the following is the BEST practice for installing the NVMe SSD to maximize performance?
⚠ Common exam trap
Many exam-takers think any PCIe slot is fine, but the dedicated M.2 PCIe 4.0 slot is specifically designed for NVMe SSDs and provides the highest bandwidth, while other options introduce significant bottlenecks.
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
✓
Install the SSD in the dedicated M.2 PCIe 4.0 slot
The M.2 slot supports PCIe 4.0 x4, which provides up to 8 GB/s bandwidth, perfectly matching a high-performance NVMe SSD. Installing the SSD in this dedicated slot avoids any bottleneck from the PCIe 3.0 graphics card or slower interfaces, ensuring maximum sequential read/write speeds.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a PCIe 3.0 x1 expansion card for the SSD
Why it's wrong here
A PCIe 3.0 x1 expansion card provides only a single third-generation lane, which after 8b/10b encoding yields roughly 985 MB/s of real throughput. A typical PCIe 4.0 NVMe SSD exceeds 7,000 MB/s, so this card would throttle the drive to about 14% of its capability, negating any benefit of NVMe. Also, using an x1 slot for storage when an M.2 slot is available adds an unnecessary adapter that complicates the install and can introduce driver or boot-order issues. The slot is simply not designed for high-performance storage.
When this WOULD be correct
If the motherboard lacks an M.2 slot and all PCIe x16 slots are occupied by graphics cards, but a PCIe x1 slot is available, using a PCIe 3.0 x1 adapter for an NVMe SSD could be a viable option for adding SSD storage, albeit with limited speed.
- ✓
Install the SSD in the dedicated M.2 PCIe 4.0 slot
Why this is correct
The dedicated M.2 PCIe 4.0 slot connects the SSD directly to the CPU or chipset via four PCIe 4.0 lanes, delivering up to 8 GB/s of bidirectional bandwidth. This matches the full speed of a modern NVMe SSD, which typically supports PCIe 4.0 x4. It also places the drive flat on the motherboard, avoiding the need for any adapter or cable and minimizing latency. Because the motherboard explicitly provides this slot, it is the intended and fastest way to install the SSD.
- ✗
Connect the SSD via a SATA III cable to a SATA port
Why it's wrong here
SATA III tops out at 6 Gb/s, which equates to just 600 MB/s after 8b/10b encoding—less than one-tenth of what a PCIe 4.0 NVMe SSD is capable of. Moreover, an NVMe SSD uses PCIe signals and protocol; connecting it to a SATA port would require a bridge chip that converts the interface, adding latency and further slowing throughput. Even the fastest SATA drives are limited by this interface, so this method would completely negate the performance advantage of the NVMe drive over a conventional 2.5-inch SATA SSD.
When this WOULD be correct
This option would be correct if the user wanted to install a SATA-based SSD (e.g., 2.5-inch SATA SSD) and the motherboard had available SATA ports. For example, a question asking for the best way to connect a SATA SSD for general storage.
- ✗
Use a PCIe 2.0 x16 slot with an adapter
Why it's wrong here
Although a PCIe 2.0 x16 slot provides 8 GB/s, using an adapter may not be necessary, and the slot's older generation still offers less bandwidth than PCIe 4.0. The dedicated M.2 slot is the optimal choice.
When this WOULD be correct
If the motherboard had no M.2 slot and only PCIe 2.0 slots available, and the user needed to add an NVMe SSD, using a PCIe 2.0 x16 slot with an adapter would be a valid option to add NVMe storage, albeit at reduced speed.
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.
✓Install the SSD in the dedicated M.2 PCIe 4.0 slotCorrect answer▾
Why this is correct
The dedicated M.2 PCIe 4.0 slot connects the SSD directly to the CPU or chipset via four PCIe 4.0 lanes, delivering up to 8 GB/s of bidirectional bandwidth. This matches the full speed of a modern NVMe SSD, which typically supports PCIe 4.0 x4. It also places the drive flat on the motherboard, avoiding the need for any adapter or cable and minimizing latency. Because the motherboard explicitly provides this slot, it is the intended and fastest way to install the SSD.
✗Use a PCIe 3.0 x1 expansion card for the SSDWrong answer — click to see why▾
Why this is wrong here
A PCIe 3.0 x1 expansion card provides only 1 GB/s bandwidth, severely bottlenecking a high-performance NVMe SSD that requires PCIe 3.0 x4 (4 GB/s) or PCIe 4.0 x4 (8 GB/s). This would drastically reduce SSD performance.
★ When this WOULD be the correct answer
If the motherboard lacks an M.2 slot and all PCIe x16 slots are occupied by graphics cards, but a PCIe x1 slot is available, using a PCIe 3.0 x1 adapter for an NVMe SSD could be a viable option for adding SSD storage, albeit with limited speed.
Why candidates choose this
Candidates may think any PCIe adapter works for NVMe SSDs, overlooking the lane width and version requirements for optimal performance, or they might assume a x1 slot is sufficient for an SSD.
✗Connect the SSD via a SATA III cable to a SATA portWrong answer — click to see why▾
Why this is wrong here
Connecting an NVMe SSD via SATA III cable is impossible because NVMe SSDs use the PCIe interface, not SATA. SATA III has a maximum throughput of 6 Gbps, which is far slower than PCIe 4.0 x4, severely bottlenecking performance.
★ When this WOULD be the correct answer
This option would be correct if the user wanted to install a SATA-based SSD (e.g., 2.5-inch SATA SSD) and the motherboard had available SATA ports. For example, a question asking for the best way to connect a SATA SSD for general storage.
Why candidates choose this
Candidates may confuse NVMe SSDs with SATA SSDs, or think SATA III is a universal connection method for all SSDs, overlooking the interface incompatibility.
✗Use a PCIe 2.0 x16 slot with an adapterWrong answer — click to see why▾
Why this is wrong here
Using a PCIe 2.0 x16 slot with an adapter would limit the NVMe SSD to PCIe 2.0 speeds (5 GT/s per lane), which is significantly slower than the available PCIe 4.0 M.2 slot (16 GT/s per lane), thus not maximizing performance.
★ When this WOULD be the correct answer
If the motherboard had no M.2 slot and only PCIe 2.0 slots available, and the user needed to add an NVMe SSD, using a PCIe 2.0 x16 slot with an adapter would be a valid option to add NVMe storage, albeit at reduced speed.
Why candidates choose this
Candidates may think any PCIe slot can deliver high performance and overlook the generation and lane limitations, or they may assume that using a larger slot (x16) is always better than a smaller slot (x4).
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
Motherboard Components and Form Factors
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.
Key term
Solid-state Drive
A solid-state drive (SSD) is a storage device that uses flash memory to save data permanently, with no moving parts, making it much faster and more durable than a traditional hard disk drive.
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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.