SanDisk

SanDisk SDSSDEX2-480G-G25 Extreme 900 Portable SSD 480GB

4.1 (214 reviews)
70 inUSB 3.1

Transfer massive files at up to 850 MB/s with SanDisk's rugged, pocket-sized portable SSD.

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Overview

The SanDisk Extreme 900 Portable SSD (SDSSDEX2-480G-G25) is built for professionals and power users who need fast, reliable external storage they can take anywhere. With sequential read and write speeds both rated at up to 850 MB/s over a USB 3.1 Gen 2 connection, it can transfer a full 480GB of data in a fraction of the time a traditional portable hard drive would require. This makes it well suited for photographers offloading large RAW image batches, videographers shuttling project files between editing stations, or anyone who regularly moves substantial amounts of data and cannot afford to wait.

The drive's solid-state construction means there are no spinning platters or moving heads inside, which gives it inherent resistance to the bumps and vibrations of daily transport. At 5.25 x 3.25 x 0.70 inches, it is compact enough to slip into a laptop bag or cargo pocket, though it is worth noting that newer-generation portable SSDs have since shrunk further in size. The USB 3.1 Gen 2 interface is backward compatible with USB 3.0 and 2.0 ports, so the drive will work with older systems—just at correspondingly lower transfer rates. For users who need to move big files fast and value solid-state durability, the Extreme 900 delivers strong performance in a portable package.

Key Features

Storage Capacity: 480GB Solid State Drive.

Read Speed: up to 850 MB/s

Write Speed: up to 850 MB/s

Interface: USB 3.1 Gen 2.

Dimensions (H x W x L): 5.25 x 3.25 x 0.70 in (133.35 x 82.55 x 17.78 mm).

Specifications

Brand
SanDisk
Model
SDSSDEX2-480G-G25
Capacity
480GB
Read Speed
Up to 850 MB/s
Write Speed
Up to 850 MB/s
Interface
USB 3.1 Gen 2
Drive Type
Portable Solid State Drive
Dimensions
5.25 x 3.25 x 0.70 in (133.35 x 82.55 x 17.78 mm)

Pros & Cons

👍 Pros

  • Read and write speeds up to 850 MB/s dramatically reduce file transfer times for large media.
  • USB 3.1 Gen 2 interface provides high bandwidth while remaining backward compatible with older USB ports.
  • Compact dimensions at 5.25 x 3.25 x 0.70 inches make it highly portable.
  • Solid-state design with no moving parts offers greater shock resistance than portable hard drives.

👎 Cons

  • 480GB capacity may feel limited for users who routinely work with very large video or data sets.
  • The drive's form factor is wider and thicker than many newer portable SSDs on the market.
  • USB 3.1 Gen 2 ports are required to achieve the maximum advertised speeds; older ports will bottleneck performance.
  • No IP-rated water or dust resistance listed for this model.

Frequently Asked Questions

It connects via USB 3.1 Gen 2, which supports the drive's maximum transfer speeds of up to 850 MB/s. It is also backward compatible with USB 3.0 and USB 2.0 ports at reduced speeds.
SanDisk rates it at up to 9x faster than a portable hard drive, with sequential read and write speeds both reaching up to 850 MB/s.
The 480GB model holds a substantial volume of photos, documents, and video files. However, users regularly working with large 4K video projects may want to consider whether this capacity meets their volume needs before purchasing.
The Extreme 900 measures 5.25 x 3.25 x 0.70 inches (133.35 x 82.55 x 17.78 mm), making it compact enough to carry in a bag pocket or laptop case.