SanDisk Extreme PRO Portable SSD 1TB: Review, Pros & Cons

Summary

A pocketable 1 TB USB-C NVMe drive rated up to 2,000 MB/s with a 5-year warranty, but the Extreme/Extreme PRO line has a documented, unresolved data-loss and unmountable-drive failure mode even after firmware updates. Treat it as high risk for irreplaceable data and keep a 3-2-1 backup.

Strengths

Fast sustained transfers on the prior generation, about 1,050 MB/s sequential.
Consistent write performance across the full capacity in prior-generation testing.
Attractive, weather-resistant silicone-wrapped aluminum shell with a carabiner loop.
Includes both USB-C and USB-A cables plus 128-bit AES vault software.
Backed by a 5-year warranty and offered in 1 TB, 2 TB and 4 TB.

Weaknesses

The Extreme/Extreme PRO line has a documented, unresolved data-loss and unmountable-drive failure mode, even after firmware updates.
Western Digital did not explain the root cause and did not proactively offer free data recovery.
No independent test of the V2 exists in the sources read here, so the ~2,000 MB/s claim is unverified.
PCMag no longer recommends buying the affected SSDs and notes a class-action suit against WD.

Verified specifications

Model number	SDSSDE81-1T00-G25 (1 TB).
Interface	USB 3.2 Gen 2x2 (USB-C).
Capacities	1 TB, 2 TB, 4 TB.
Claimed sequential performance	up to ~2,000 MB/s read and write (manufacturer claim; no independent V2 test in the sources read here).
Security software	SanDisk SecureAccess (128-bit AES vault).
Default file system	exFAT (prior generation).
Power	bus-powered (prior generation).
NAND/controller	WD NVMe architecture with WD 64L TLC NAND and DDR3 DRAM (prior generation; V2 internals not independently documented).
Warranty	5 years.
Ruggedness (prior generation)	IP55 water/dust resistance, 2-meter drop protection.
Included (prior generation)	USB-C to USB-C and USB-C to USB-A cables (~1 ft), SecureAccess software.
No activity or power indicator LED (prior generation).

Full research notes and sources

Speed and testing

No independent instrumented test of the V2 was found in this run. PCMag’s prior-generation testing recorded 957 MB/s read and 970 MB/s write in CrystalDiskMark sequential tests and a 2-second 1.2 GB folder copy. Until a V2 is tested, treat the headline as a claim.

Reliability and data loss

Ars Technica, The Verge and PetaPixel documented repeated total data loss and unmountable drives across the Extreme, Extreme V2, Extreme PRO and Extreme PRO V2 lines, including units that had received Western Digital’s May 2023 firmware update. Western Digital described the defect only as possible unexpected disconnection from a computer and did not explain the root cause or offer free data recovery. The Verge lost 3 TB of video on a replacement drive that was supposed to include the firmware fix. The May 2023 firmware fix covered only specific capacities: 4 TB Extreme, 4/2/1 TB Extreme PRO, and 4 TB My Passport. CNET, Cult of Mac and The Inventory published deal posts for the drive without warning readers.

Ownership and recovery costs

Ownership cost is not just the purchase price. The manufacturer page offers a Data Recovery Plan (Ontrack) as a paid add-on, and a 3-2-1 backup strategy effectively requires additional drives given the documented failure mode. No subscription or vendor lock-in is involved.

Is it worth it?

Given the documented data-loss risk, value is poor for any use case involving irreplaceable data regardless of price. The drive’s speed and 5-year warranty are competitive on paper, but the unresolved reliability issue dominates the value calculation. Only consider it if the data is disposable or replicated and the price is low enough to treat the drive as expendable. Buyers needing a trustworthy portable SSD should look elsewhere until a fixed hardware revision is confirmed.

Which model this is

This page covers the second-generation SanDisk Extreme PRO Portable SSD, 1 TB, model number SDSSDE81-1T00-G25, sold under the USB 3.2 Gen 2x2 (USB-C) interface with a claimed ~2,000 MB/s. Capacities offered are 1 TB, 2 TB and 4 TB. The Amazon listing for this family is ASIN B08GV9M64L; it is not used as a source here.