FX991 M.2 SSD 4TB NVMe SSD M2 2280 PCIe Gen 4x4, Read Up to 7000MB/s, Internal Solid State Drive for PS5 Laptop Desktop 3D QLC NAND
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AI Verdict
This 4TB PCIe Gen 4x4 NVMe SSD offers 7300MB/s read and 6200MB/s write speeds, but its QLC NAND and widespread reports of early failures make it a risky choice for critical data.
Regret Score™
Very High RiskLower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity
Issues discovered after purchase
Critically weak dimension
Amazon rating vs actual quality
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Pros
- Achieves sequential read speeds up to 7300MB/s and write speeds up to 6200MB/s, making system and application response quick.
- Features auto-adaptive temperature adjustment and a high-conductivity graphite heatsink to maintain performance under load.
- Utilizes HMB and smart SLC cache for enhanced performance during multitasking and game loading.
- Compatible with PS5, laptops, and desktops, offering broad upgrade potential.
- Includes TRIM, S.M.A.R.T, and AES-256 encryption for data management and security.
- Backed by a 5-year limited warranty or 2400TBW.
Cons
- Numerous user reports indicate drives failing within weeks or months of use.
- Users frequently experience random disconnections and the drive disappearing from the system.
- Multiple buyers reported complete data loss due to sudden drive failures.
- Some users could not install Windows on the drive, limiting its use as a boot drive.
- Customer support is widely reported as unresponsive or non-existent for warranty claims.
Dimension Scores
The SSD delivers sequential read speeds up to 7300MB/s and write speeds up to 6200MB/s, which is at the upper end for PCIe Gen 4x4 drives.
Extensive user feedback indicates frequent failures, random disconnections, and data loss within weeks or months of use, making it highly unreliable.
A 4TB capacity is substantial for modern gaming libraries, large media files, and extensive software installations, fitting high-demand storage needs.
The drive is compatible with PS5, laptops, and desktops, supporting Windows, Mac OS, and Linux, covering most common use cases.
Best For
- PS5 storage expansion for games that can be re-downloaded if lost.
- Temporary storage for non-critical files where data loss is acceptable.
- Users on a very tight budget who understand and accept the high risk of failure.
Not Recommended For
- Primary boot drive for Windows or other operating systems.
- Storing irreplaceable personal documents, photos, or work files.
- Professional use cases requiring high data integrity and uptime.
Watch Out For
- Drives have been reported to die in as little as 6 weeks, with some users experiencing multiple failures across purchased units.
- Many users describe the drive randomly disconnecting and reappearing, making it unreliable for continuous use.
- Complete data loss is a recurring issue, with drives suddenly failing without warning.
- Some IT professionals reported inability to install Windows on the drive, even after troubleshooting BIOS settings and firmware.
- Customer support is frequently cited as unresponsive, leaving users without recourse for warranty claims or replacements.
Full Specifications
| ASIN | B0D4YDX9LQ |
| Brand | Fikwot |
| Color | Black |
| Series | FX991_4TB |
| Hard Drive | 4 TB Solid State Drive |
| Item Weight | 1.13 ounces |
| Manufacturer | Fikwot |
| Special Feature | Backward Compatible, Shock Resistant |
| Flash Memory Size | 4 TB |
| Hardware Platform | PC |
| Installation Type | Internal Hard Drive |
| Item model number | FX991 |
| Compatible Devices | Desktop, Gaming Console, Laptop |
| Product Dimensions | 3.15 x 0.87 x 0.09 inches |
| Hard Disk Interface | PCIE x 4 |
| Hard Drive Interface | PCIE x 4 |
| Hard Disk Description | Solid State Drive |
| Hard Disk Form Factor | 8 Centimeters |
| Item Dimensions LxWxH | 3.15 x 0.87 x 0.09 inches |
| Connectivity Technology | M.2 NVMe PCIe 4.0 |
| Digital Storage Capacity | 4 TB |
What Buyers Say
The most striking feedback on the Fikwot FX991 4TB SSD is the alarming number of reports detailing catastrophic failures. Users frequently describe drives dying within weeks, randomly disconnecting, or causing complete data loss. Despite its advertised high speeds and thermal management features, the pervasive reliability issues overshadow any performance benefits. Many buyers also noted unresponsive customer support when attempting warranty claims.
“Dude, this thing died on me in like two months, lost all my game saves, never again. Don't waste your money, seriously.”
Common Praise
- Achieves advertised read speeds of 7300MB/s and write speeds of 6200MB/s.
- Maintains stable temperatures under heavy load due to the included graphite heatsink.
- Installation is straightforward and doesn't require complex drivers.
- Works as expected for PS5 storage expansion.
Common Complaints
- Drives failing completely after only a few weeks or months of use.
- Frequent random disconnections causing the drive to disappear from the system.
- Experiencing complete data loss due to sudden and unexpected drive failures.
- Inability to get the drive recognized by the system or install an operating system.
- Lack of response or support from customer service for warranty issues.
Ownership Tips
- The drive's performance, when it works, is fast for loading games and applications.
- The included heatsink seems to do its job, keeping temperatures in check during use.
- Initial setup is quick, but the long-term stability is a huge gamble.
- Many users report the drive becoming undetectable by the system after a short period.
- Some found it impossible to get a replacement or refund from the manufacturer after failure.
Frequently Asked Questions
Is the Fikwot FX991 4TB SSD compatible with PS5?
Yes, the FX991 4TB SSD is compatible with PS5 for storage expansion, allowing you to install and play games directly from it.
What are the maximum read and write speeds of this SSD?
The Fikwot FX991 4TB SSD offers maximum sequential read speeds of up to 7300MB/s and write speeds of up to 6200MB/s.
Does this SSD come with a heatsink?
Yes, the FX991 4TB SSD is equipped with a high-conductivity graphite heatsink for thermal management, which helps maintain performance under high load.
What type of NAND flash does this SSD use?
This SSD uses 3D QLC NAND flash.
What is the warranty period for the Fikwot FX991 4TB SSD?
Fikwot provides a 5-year limited warranty or 2400TBW for the FX991 M.2 4TB SSD.
Can I use this SSD as a boot drive for my computer?
While technically possible, multiple users have reported issues with installing Windows on this drive, and its overall reliability concerns make it a risky choice for a primary boot drive.
Buying Guide
When you're looking at an M.2 NVMe SSD, especially a high-capacity one like 4TB, you're buying speed and convenience. You'll slot this directly into your motherboard, and it'll be way faster than older SATA SSDs or traditional hard drives. Pay close attention to the PCIe generation (Gen 4x4 is current high-performance) and the NAND type, as QLC (Quad-Level Cell) often means a lower price but can come with trade-offs in endurance and sustained write performance after the cache fills up.
PCIe Gen 4x4
This tells you how fast the drive can talk to your computer. Gen 4 is the current standard for high-performance, and 'x4' means it uses four lanes, which is the fastest configuration for consumer M.2 drives. It's like having a super-wide, super-fast highway for your data.
Read/Write Speed (e.g., 7300MB/s / 6200MB/s)
These numbers are how quickly the drive can pull data off (read) or put data onto (write) itself. Higher numbers mean faster game loading, quicker file transfers, and a snappier system overall. Think of it as the top speed of that data highway.
QLC NAND
This refers to the type of memory cells used to store data. QLC packs more data into each cell, which makes the drive cheaper to produce and allows for higher capacities. The trade-off is often lower endurance (how many times data can be written before cells wear out) and potentially slower performance once the faster SLC cache is exhausted during very large writes.
TBW (Total Bytes Written)
This is an endurance rating, telling you how much data can be written to the drive over its lifetime before it's expected to fail. For a 4TB drive, 2400TBW is a decent number, but QLC drives can sometimes hit this limit faster in heavy write scenarios than TLC drives.
Alternatives
If this drive's reliability concerns are a deal-breaker, look for 4TB PCIe Gen 4x4 NVMe SSDs with TLC NAND from reputable brands, or consider models with higher TBW ratings if you plan on heavy write workloads.
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