The SanDisk Extreme PRO Portable SSD offers high USB4 speeds but faces serious data loss and reliability issues.
- achieving read speeds of up to 3800 MB/s and write speeds of up to 3700 MB/s
- with a rugged silicone shell and forged aluminum chassis
- There are widely reported 2023 data-loss failures, with drives becoming unreadable/unmountable, and an ongoing class action lawsuit against Western Digital, SanDisk's parent company.
This drive may not be suitable for users with critical data where absolute reliability is paramount.
Who it suits
Works well if
- High-speed data transfers requiring USB4 interface speeds
- Use in demanding environments where rugged protection is beneficial
Think twice if
- Storing critical or irreplaceable data where any risk of loss is unacceptable
- Applications requiring constant, uninterrupted drive connection
The numbers that matter
- Up to 3800 MB/s read speed
- Up to 3700 MB/s write speed
- USB4 interface
- Marketplace rating of 4.5 out of 5 stars
- 5-year limited warranty
What the evidence says
| Item | Value |
|---|---|
| Product Name | SanDisk Extreme PRO Portable SSD with USB4 2TB |
| Read Speed | Up to 3800 MB/s |
| Write Speed | Up to 3700 MB/s |
| Interface | USB4 |
| Thunderbolt 4 Support | Supports Thunderbolt 4 |
| Marketplace Rating | 4.5 / 5 |
| Warranty | 5-year limited warranty |
| Real-world transfer speed (32GB game file) | around 800 MBps |
| Transfer speed with USB 3.2 Gen 2x1 | 10 Gbps (around 1,250 MBps) |
| Dimensions | 110 × 57 × 10 mm |
| Data Loss Reports | widely reported 2023 data-loss failures |
| Disconnect Issues | firmware issue can cause some drives to unexpectedly disconnect |
| Filesystem Loss | after a sustained write they will completely lose their filesystem |
| Water and Dust Resistance | IP65 water and dust resistance |
| Drop Protection | three-metre drop protection |
Where buyers hesitate
What is the SanDisk Extreme PRO Portable SSD?
It's a portable SSD designed for high-speed transfers with a rugged build, but faces reliability concerns. This drive boasts USB4 speeds and a durable chassis, aiming to be a fast and tough storage solution. However, community reports highlight significant issues with data loss and drive disconnects, casting doubt on its overall reliability for critical data.
Is the SanDisk Extreme PRO worth it?
It offers high speeds and ruggedness, but serious reliability concerns may outweigh its benefits for some. The SanDisk Extreme PRO promises impressive USB4 transfer rates and robust construction, backed by a 5-year warranty. However, significant community reports detail data loss failures and disconnections, which could make it a risky purchase if data integrity is your top priority.
Can the SanDisk Extreme PRO cause data loss?
Yes, community reports indicate a risk of data loss and drives becoming unreadable. Several community reports mention widely reported 2023 data-loss failures where drives became unreadable or unmountable. Public discussions also note filesystem loss after sustained writes, leading to ongoing discussions and even a class action lawsuit against SanDisk's parent company.
Is SanDisk Extreme PRO good for dash cam?
It may be too unreliable for dash cams due to reported data loss and disconnection issues. While the SanDisk Extreme PRO offers high speeds, critical reliability issues like data loss and unexpected disconnects reported in community forums suggest it might not be the most dependable choice for continuous recording devices like dash cams, where data integrity is crucial.
Why we judge it this way
The SanDisk Extreme PRO Portable SSD presents itself as a high-performance storage solution, promising blazing-fast speeds via its USB4 interface and a robust build designed for portability. The listing highlights read speeds of up to 3800 MB/s and write speeds up to 3700 MB/s, alongside features like a rugged silicone shell and forged aluminum chassis, suggesting a device built for demanding use cases. It is designed to allow users to work at a turbocharged pace in external USB drives and access large files in real-time, delivering next-gen results at next-gen speeds.
The product's specifications suggest it is equipped for modern workflows, offering USB4 connectivity (40Gbps) and backwards compatibility with older USB 3.2 and USB 2.0 devices, and supports Thunderbolt 4 as well. This versatility allows it to connect with a wide range of devices. The robust construction is further detailed by community reports, noting it offers IP65 water and dust resistance, which is a properly certified international standard, and three-metre drop protection. The inclusion of a 5-year limited warranty further reinforces the impression of a durable and reliable product designed to last, offering users peace of mind regarding their investment.
However, a significant body of community evidence raises serious concerns about the drive's actual reliability and data integrity. Multiple reports detail widespread data-loss failures occurring in 2023, where drives became unreadable or unmountable. This issue is severe enough to have prompted an ongoing class action lawsuit against Western Digital, SanDisk's parent company. Further community statements describe a specific firmware issue that can cause unexpected disconnections from a computer, and another complaint notes the drive can lose its filesystem entirely after sustained writes, making data recovery uncertain.
These recurring community complaints directly challenge the product's promise of outstanding reliability. While the listing touts a 5-year warranty, the nature of data loss and drive unmountability suggests potential failures that may go beyond typical warranty claims, impacting user confidence and the safety of stored data. Despite the headline speeds, real-world transfer speeds for a 32GB game file were reported around 800 MBps, and with USB 3.2 Gen 2x1 devices, speeds were around 10 Gbps (1,250 MBps). The marketplace rating of 4.5/5 from 342 ratings indicates general satisfaction, but it does not appear to fully capture or mitigate the specific, severe issues raised in community discussions.
Therefore, while the SanDisk Extreme PRO Portable SSD delivers on its promise of high speeds and a rugged design, prospective buyers must weigh these benefits against the substantial community-reported risks of data loss and drive malfunction. For users storing critical or irreplaceable data, the potential for drive failure and data corruption presents a significant drawback that needs careful consideration. The drive's dimensions are 110 × 57 × 10 mm, making it a compact option, but its core function of reliable data storage is undermined by these reported issues.
The strongest objection we found
There are widely reported 2023 data-loss failures, with drives becoming unreadable/unmountable, and an ongoing class action lawsuit against Western Digital, SanDisk's parent company.
Frequently Asked Questions
What this page does not answer
- What is the best portable SSD for video editing?
- How do SanDisk SSDs compare to Samsung SSDs?
- What is NVMe technology?
- Crucial X10 Pro for a clean reliability record
- other SanDisk portable SSD models
- alternative high-capacity microSD cards like the SanDisk 32GB Ultra microSDHC card
- USB flash drives for everyday storage
How this analysis was built
This analysis was compiled by examining the product listing details, community forum reports regarding SanDisk Extreme PRO Portable SSD models, and user-provided usage figures. Direct buyer reviews for this specific product were not available.
Sources and verification
Everything on this page traces back to the listing published for this product on Amazon.co.uk. At the analysis date that listing showed 4.5 stars across 342 reviews. The write-up works from 14 verified data points, drawn from listings of comparable products in this category. Analysis generated on 2026-10-29.
