Crucial

Crucial CT4000X9SSD902 4TB Portable SSD 1050MB/s USB 3.2

4.5 (18764 reviews)
4TB SSDUSB 3.2USB-CIP55

Store up to 4TB and transfer files at 1050MB/s with Crucial's rugged, pocket-sized X9 portable SSD — IP55 rated and drop-proof to 7.5 feet.

$379.26*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The Crucial X9 4TB Portable SSD (CT4000X9SSD902) delivers a compelling combination of high capacity, fast performance, and rugged durability in a pocket-friendly design. With sequential read speeds up to 1050MB/s via USB 3.2 Gen 2, it handles large file transfers, media editing workflows, and system backups far more efficiently than traditional external hard drives. The 4TB capacity provides enough room for extensive photo libraries, video projects, game collections, and full system backups without the need to constantly manage free space.

Durability is a core strength of the X9. Its IP55 rating means it can handle dust exposure and low-pressure water jets, while drop protection up to 7.5 feet gives real peace of mind for users who carry their drives in bags or work in the field. The drive connects via USB-C with USB-A compatibility, ensuring it works seamlessly across a wide ecosystem of devices including Windows PCs, Macs, iPad Pro, Chromebooks, Android devices, Linux systems, and gaming consoles like PS4, PS5, and Xbox. Crucial also bundles a three-month subscription to Mylio Photos+ for photo organization and Acronis True Image for backup and cloning, giving new users practical tools right out of the box. For anyone needing large-capacity portable storage with solid speed and build quality, the X9 is a strong contender.

Key Features

High-speed Performance: Designed for casual gamers and everyday use, this external SSD with up to 1050MB/s accelerates large file transfers, media editing, and backup processes outperforming traditional hard drives

Built to Last: Perfect for travel and all types of weather with IP55 water and dust resistance. Plus, it's drop resistant up to 7.5 ft (2 meters). This portable drive is designed for durability and reliability wherever you go

Broad Compatibility: External drive connects effortlessly with Windows, Mac, iPad Pro, Chromebooks, Android, Linux, PS4, PS5, and Xbox via USB-C and USB-A for easy and fast file transfers

High-Capacity Storage: Store all your photos, videos, backups, and more with this compact 4TB SSD. It's perfect for students, everyday users, and anyone needing secure and reliable storage for their files

Bonus Software Included: Enjoy three months of Mylio Photos plus and Acronis True Image when you purchase and register your external drive

Specifications

Brand
Crucial
Model
CT4000X9SSD902
Capacity
4TB
Read Speed
Up to 1050MB/s
Interface
USB 3.2 Gen 2
Connector
USB-C (USB-A compatible)
Water/Dust Resistance
IP55
Drop Protection
Up to 7.5 feet (2 meters)
Compatibility
Windows, Mac, iPad Pro, Chromebooks, Android, Linux, PS4, PS5, Xbox
Bundled Software
3-month Mylio Photos+, Acronis True Image

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Pros & Cons

👍 Pros

  • 4TB capacity in a compact form factor provides ample portable storage without bulk
  • 1050MB/s read speed dramatically reduces transfer times for large files and media projects
  • IP55 water and dust resistance plus 7.5-foot drop protection make it genuinely travel-ready
  • Broad cross-platform compatibility covers Windows, Mac, iPad Pro, Chromebooks, Android, Linux, and gaming consoles
  • Bundled Mylio Photos+ and Acronis True Image subscriptions add immediate utility out of the box

👎 Cons

  • Write speeds are not specified and may be noticeably slower than the advertised 1050MB/s read speed
  • No hardware encryption built in, so sensitive data requires third-party encryption software
  • USB 3.2 Gen 2 interface limits throughput compared to newer Thunderbolt or USB4 drives
  • At 4TB capacity the price point is significantly higher than equivalent portable hard drives

Frequently Asked Questions

The X9 delivers sequential read speeds up to 1050MB/s over its USB 3.2 Gen 2 interface, making large file transfers significantly faster than traditional external hard drives.
Yes, it carries an IP55 rating for water and dust resistance and is drop-tested to withstand falls up to 7.5 feet (2 meters), making it well-suited for use on the go.
It connects via USB-C and USB-A and is compatible with Windows, Mac, iPad Pro, Chromebooks, Android, Linux, PS4, PS5, and Xbox.
Yes, it includes a three-month subscription to Mylio Photos+ for photo management and Acronis True Image for backup and cloning when you purchase and register the drive.
Yes, it works with PS4, PS5, and Xbox consoles for storing and playing games, though performance will depend on the console's USB implementation.