
Sandisk
The SanDisk Extreme PRO Portable SSD (4TB, USB4) delivers up to 3800 MB/s read and 3700 MB/s write speeds in a rugged, compact enclosure, while offering backward compatibility with USB 3.2, USB 2.0 and Thunderbolt 4. It targets professionals who need high‑capacity, high‑performance storage for large media files on modern ports.
Pros
Current
$899.99
Average
$446.89
Lowest
$365.49
Highest
$899.99
Lower = better sales rank
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Cons
From Expert Reviews
Praised by Experts
Criticized by Experts
From User Reviews
Users Love
Users Complain About
Expert Opinion
Professional reviewers commend the Extreme PRO USB4 SSD for its Thunderbolt‑class speeds, rugged construction, and real‑world bandwidth that validates the advertised numbers. However, they caution that the full performance envelope is only reachable on USB4 or Thunderbolt 4 hosts, and that 4K random write performance has slipped compared to earlier USB 3.2 models, with endurance data still missing.
What Users Say
Everyday users largely echo the reviewers' praise for blazing transfer rates and the drive's durability, especially for on‑the‑go creators. The most common complaints revolve around slower speeds on legacy ports and the absence of clear endurance specifications, though no widespread reliability issues have been reported.
Common Complaints
Performance drops on non‑USB4 hosts, regression in 4K write speeds compared to prior models, and lack of publicly disclosed endurance or TBW specifications.
How It Compares
vs. Prior SanDisk USB 3.2 Gen 2×2 (implied benchmark)
Advantages
Disadvantages
Choose the prior USB 3.2 model if 4K write speed is critical and you have only USB 3.2 ports; otherwise opt for the new USB4 version for higher overall throughput and future‑proof compatibility.

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