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Crucial

Crucial X9 4TB Portable SSD, Up to 1050MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902

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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Aug 4 – Aug 9
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Capacity: 4TB


Style: X9 - up to 1050MB/s


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

Description

The Crucial X9 4TB Portable SSD (CT4000X9SSD902) provides high-performance storage with read speeds of up to 1050MB/s, allowing for quick and efficient transfers of large files, including high-resolution photos, 4K videos, and gaming data. With its 4TB storage capacity, this external SSD is perfect for professionals, content creators, and gamers who need ample storage for their growing digital libraries. Built for portability and durability, the Crucial X9 is compact and lightweight, making it easy to carry wherever you go. Its IP55-rated water and dust resistance and drop protection from up to 7.5 feet ensure that your data remains safe in even the toughest conditions, whether you're traveling, working outdoors, or in harsh environments. The Crucial X9 is compatible with a wide range of devices, including PC, Mac, Android, and more, making it easy to transfer files across multiple platforms using USB-C connectivity. This combination of speed, capacity, and ruggedness makes the Crucial X9 4TB Portable SSD an excellent choice for users who need fast, reliable storage that can handle the demands of professional use and travel.

Digital Storage Capacity: 4 TB


Hard Disk Interface: USB-C


Connectivity Technology: USB


Brand: Crucial


Special Feature: Portable


Hard Disk Form Factor: 2.54 Inches


Hard Disk Description: Solid State Drive


Compatible Devices: Camera, Gaming Console, Laptop, Tablet


Installation Type: External Hard Drive


Color: Black


Digital Storage Capacity: 4 TB


Hard Disk Interface: USB-C


Connectivity Technology: USB


Additional Features: Portable


Hard Disk Form Factor: 2.54 Inches


Compatible Devices: Camera, Gaming Console, Laptop, Tablet


Specific Uses For Product: Business, Gaming, Personal


Read Speed: 1050 Megabytes Per Second


Media Speed: 1050 megabytes_per_second


Cache Memory Installed Size: 4 TB


Data Transfer Rate: 10 Gigabits Per Second


Form Factor: Portable


Hardware Connectivity: USB Type C


Compatible Video Game Console Models: Microsoft Xbox SERIES S, Microsoft Xbox SERIES X, Sony PlayStation 5


Hard-Drive Size: 4 TB


Item Weight: 32 Grams


Number of Items: 1


Unit Count: 1.0 Count


Customer Package Type: Standard packaging


Brand: Crucial


Model Number: CT4000X9SSD902


Hard Disk Description: Solid State Drive


Built-In Media: Crucial X9 Drive, USB-C to USB-C cable, 3-month Mylio Photos+ code


Model Name: Crucial X9 4TB Portable SSD


Manufacturer: Micron


Global Trade Identification Number: 79


UPC: 649528939579


Mfr Part Number: CT4000X9SSD902


Warranty Description: 3-year limited Warranty


Installation Type: External Hard Drive


Color: Black


Enclosure Material: Polycarbonate


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 4 – Aug 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Amazing portable SSD
Capacity: 2TB Style: X9 - up to 1050MB/s
I'm very impressed with this portable SSD. The size is perfect—it's incredibly small, lightweight, and easy to carry anywhere. It doesn't take up much space, which makes it great for travel or everyday use. The performance has been excellent, with fast transfer speeds and reliable storage. After using this SSD, my PC feels much faster when accessing and transferring files. It's a high-quality product that delivers exactly what I was looking for. I highly recommend it to anyone who wants a fast, compact, and dependable portable SSD ... show more
Reviewed in the United States on June 30, 2026 by Lianne
    • Great product
Capacity: 4TB Style: X9 - up to 1050MB/s
So far so good. I have bought two of these Crucial portable SSDs. No problems and my uploads to them go really quick. SSDs are a little pricey, but well worth it. Although I did wait for sales to buy mine. They don't make any noise and have plenty of storage capacity for my needs. Super easy plug and play for the most part. We have one that is used on a MacBook and the other is on a PC desktop. Both work great. ... show more
Reviewed in the United States on June 19, 2026 by Alex
    • Tiny powerhouse — 4 TB storage in a sleek, pocketable SSD
Capacity: 4TB Style: X9 - up to 1050MB/s
Review Image by We tried it! Thompson Family Finds
I’ve been using the Crucial X9 4TB Portable SSD for a few weeks now, and I’m seriously impressed. For those who want big storage without bulk, this is it. ⸻ What I love: • Compact & lightweight — It’s so small and thin, it easily fits in a jacket pocket or laptop bag without adding bulk. • Massive capacity — 4 TB gives me peace of mind. I can store video files, large photo libraries, backups, games, etc., without constantly juggling what to keep or delete. • Good speed — It delivers up to ~1050 MB/s (per Crucial) for sequential reads, which for me has meant fast transfers of large video files. (Of course, your speed depends on your USB-port, etc.)  • Durability — It has IP55 water/dust resistance and survives drops to about 7.5 ft / 2 metres (on carpet). That gives me confidence using it on the go.  • Compatibility — Works seamlessly with Windows, Mac, Android, etc. The USB-C interface + USB-A adapter makes it flexible for different devices.  ⸻ What to watch out for / minor drawbacks: • Speeds vary — It’s great when connected via a high-speed USB-C port, but if you use older or slower ports, you won’t get top performance. • Price — Naturally, a 4 TB SSD like this comes at a premium vs smaller drives or HDDs. If you don’t need all that space immediately, you might find smaller capacity options more cost-efficient. • Heat / throttling — I didn’t notice big issues yet, but as with many portable SSDs, heavy sustained transfers can warm it up. Just something I keep in mind. ⸻ Bottom line: If you’re after “big storage in a tiny package”, the Crucial X9 4TB hits the mark. Excellent for content creators, frequent travelers, or anyone who doesn’t want to worry about running out of space. Definitely worth the investment in my book. ... show more
Reviewed in the United States on September 28, 2025 by We tried it! Thompson Family Finds
    • Fast, compact and reliable – perfect for daily backups and heavy files
Capacity: 4TB Style: X9 - up to 1050MB/s
Review Image by Danae
Review Image by Danae
I’ve been using this SSD for storing large files and backups, and so far it’s been very reliable. The speed is noticeable right away, especially when transferring large videos and files. It’s much faster compared to a regular external hard drive. The size is also a big plus — very compact and easy to carry around. Build quality feels solid, and it doesn’t get too hot during normal use. I’ve used it with both a laptop and desktop without any issues. Pros: • Very fast transfer speeds • Compact and lightweight • Plug and play (no setup needed) Cons: • Cable could be a bit longer • Price is a bit high, but you get what you pay for Overall, if you need a fast and portable storage solution, this is a great option. ... show more
Reviewed in the United States on April 9, 2026 by Danae
    • Small But Exceeds Expectations
Capacity: 1TB Style: X9 - up to 1050MB/s
Great backup drive, fast read/write times, and setup was automatic for MacBook. Can’t believe how small a device this is which makes it easy to pack for travel.
Reviewed in the United States on June 20, 2026 by RB_Medfield
    • Very fast, durable, great for travel
Capacity: 2TB Style: X9 - up to 1050MB/s
Review Image by Anthony R Smith
This is hands down the best budget portable SSD you can get right now. It’s durable, it’s fast, and it’s just plug and play, very simple. 2TB is plenty of space and works with whatever format you want to use it with. There’s no noise level, and it’s incredibly lightweight. Although it’s a great piece of gear, be careful when you’re plugging in and out multiple devices. I’ve had it corrupt because when I eject one drive and then plug another into the same exact port, there’s a chance it could corrupt and you’ll need a recovery tool to get your files out. ... show more
Reviewed in the United States on October 31, 2025 by Anthony R Smith
    • So far, this is a great drive at a great price!
Capacity: 4TB Style: X9 - up to 1050MB/s
Review Image by M. Ferrell
Review Image by M. Ferrell
CrystalDiskMark reports max sequential read of 1067 MB/sec, and sequential write of 1039 MB / sec. Sustained transfers from NVMe to the drive through USB 3.2 Gen2 run about 650 MB/sec. CrystalDiskInfo reports operating temps while powered on and idle around 40-45C, even under a heavy load operating temps never hit 70C. Comes preformatted in exFAT, which ensures compatibility across different devices and OS environments (PC, Mac, Linux, Android, etc,) so if you aren't the most tech-savvy person, it will work well to plug and play right out of the box. This thing is unbelievably small, just a little bit bigger footprint than two USB sticks side by side, and has a smaller footprint than a credit card. Virtually no noise when in operation, because SSDs don't have any moving parts. The only drawback is that the housing is plastic, metal would have been nice for durability and to help with heat dissipation. If I were going to transport this drive frequently, I'd invest in a protective sleeve of some sort, just to prevent the possibility of the housing cracking if it was dropped on a hard surface, but for typical use it should hold up just fine. Any drive can and eventually will fail, and every drive model is going to have a certain amount of defective units, but I've written almost a TB of data to this drive, and so far, so good! I'll update this review if any problems become apparent, but thus far, this seems to be a quality SSD at a great price! ... show more
Reviewed in the United States on November 26, 2025 by M. Ferrell
    • Ready to connect to my laptop and hit the road too
Capacity: 2TB Style: X9 - up to 1050MB/s
My Crucial X9 2TB Portable SSD handles my laptop memory storage with ease. I travel with it and use it in the air or waiting at stops along the way. It’s durable, reliable and the material looks great.who knew so much memory storage could be so tiny and portable? It is good looking, useful utility. My earthbound, office mates want one now ... show more
Reviewed in the United States on June 30, 2026 by Bernard Thomas

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