Connectivity Technology | USB |
---|---|
Color | Black |
Model Name | CMFSS3B-256GB |
Flash Memory Type | USB |
Manufacturer | Corsair |
Hardware Connectivity Technology | USB Type A |
UPC | 843591066402 079643319909 |
Global Trade Identification Number | 04056572725151, 00843591066402 |
RAM | 256 GB |
Add to your order
- Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
- 24/7 support when you need it.
- Quick, easy, and frustration-free claims.
- Your Rescue Plan documents will be sent to you via email to the address associated with your Amazon.com account and can be found in your account message center within the Buyer/Seller Messages.
- If your drive stops working, the Rescue data recovery plan will attempt to recover the data from the failed drive and recovered data will be returned on a media storage device or via secure cloud-based data storage.
- Covers new removeable flash memory device of any brand when purchased within 30 days (receipt must be retained for purchases not on the same transaction).
- Free shipping for in–lab data recovery; 24/7 online case status tracking
- If your data isn’t recovered, you get your money back.
- Your Rescue Plan documents will be delivered to you via email only to the address associated with your Amazon.com account and can be found in your account message center within the Buyer/Seller Messages
- If your drive stops working, the Rescue data recovery plan will attempt to recover the data from the failed drive and recovered data will be returned on a media storage device or via secure cloud-based data storage.
- Covers new removeable flash memory device of any brand when purchased within 30 days (receipt must be retained for purchases not on the same transaction).
- Free shipping for in–lab data recovery; 24/7 online case status tracking
- If your data isn’t recovered, you get your money back.
- Buy a lot of stuff on Amazon? Tons of items eligible for coverage, from the latest tech like Laptops, Game Consoles, TVs, Phones, and Cameras to major appliances, sporting goods, tools, toys, personal care, furniture, and more (not eligible for commercial or business use items).
- Accidents Happen. That’s why for your portable products we cover accidental damage from handling such as drops, spills and cracked screens. We also cover electrical and mechanical malfunctions, power surges, and wear and tear.
- Past and Future Purchases covered. 30 days after you are enrolled, all eligible past purchases (up to 1 year prior to enrollment) and future eligible purchases made on Amazon will be covered by your plan as long as you are enrolled.
- Fast, easy claims. Frustration-Free claims, with most filed in minutes. We will fix it, replace it, or reimburse you with an Amazon e-gift card for the purchase price of your product (excluding tax). File at Asurion.com/amazon.
- No Hidden Fees. For just $16.99 a month + tax you’re covered for up to 5,000 in claims per 12-month period. *THIS PROGRAM IS MONTH-TO-MONTH AND WILL CONTINUE UNTIL CANCELED* Coverage for all products ends 30 days after the plan is canceled. Cancel any time.
Add to your order
- Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
- 24/7 support when you need it.
- Quick, easy, and frustration-free claims.

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Corsair CMFSS3B-256GB Flash Survivor Stealth 256GB USB 3.0 Flash Drive, Black
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Purchase options and add-ons
Brand | Corsair |
Memory Storage Capacity | 256 GB |
Hardware Interface | USB 3.0 |
Special Feature | Waterproof |
Write Speed | USB 3.0 speed (up to 640 MB/s) |
About this item
- Corsair Flash Survivor Stealth 256gb Usb 3.0 Flash Drive - 256 Gb - Black
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Top Brand: Corsair
From the manufacturer

MILITARY-STYLE DATA TRANSPORT WITH USB 3.0 & 2.0
Your files are important — that's why you're taking them with you. Flash Survivor Stealth USB 3.0 flash drives help keep them safe. The anodized, aircraft-grade aluminum housing is waterproof to 200 meters, vibration-resistant, and shock-resistant.

USB 3.0 SPEED
If you move a lot of data, you've noticed that as convenient as USB flash drives are, they never seem to be as fast as you'd like. USB 3.0 changes the game. Flash Survivor Stealth USB 3.0 offers read speeds up to four times faster than traditional USB 2.0 drives.

HIGH-PERFORMANCE USB 2.0 SUPPORT
Not only is Flash Survivor Stealth USB 3.0 backward compatible with USB 2.0 — it offers great performance, too. No matter how up-to-date your PC is, you'll be able to quickly take care of moving your files and be off on your next adventure.

UNIVERSAL COMPATIBILITY
It works with Microsoft Windows, Mac OS X, and even Linux without drivers, and there's no software to install. Just plug it in, and go. If your computer has a USB 2.0 or 3.0 connector, you can use Flash Survivor Stealth USB 3.0.

PROVEN RELIABILITY
With almost two decades of building enthusiast-grade memory and components, we've earned a reputation for quality, compatibility, and performance. Need help? We're available by phone call, email or web forum.
Compare with similar items
This Item ![]() Corsair CMFSS3B-256GB Flash Survivor Stealth 256GB USB 3.0 Flash Drive, Black | Recommendations | |||||
Try again! Added to Cart Add to cart | Try again! Added to Cart Add to cart | Try again! Added to Cart Add to cart | Try again! Added to Cart Add to cart | Try again! Added to Cart Add to cart | Try again! Added to Cart Add to cart | |
Price | $54.99$54.99 | $146.99$146.99 | $160.00$160.00 | -17% $19.99$19.99 Typical: $24.19 | $29.99$29.99 | $7.99$7.99 |
Delivery | Get it as soon as Wednesday, Apr 9 | Get it as soon as Wednesday, Apr 9 | Get it Apr 19 - 21 | Get it as soon as Wednesday, Apr 9 | Get it as soon as Wednesday, Apr 9 | Get it as soon as Wednesday, Apr 9 |
Customer Ratings | ||||||
Sold By | Amazon.com | Amazon.com | #1 In Service | Amazon.com | Amazon.com | Vansuny |
memory capacity | 256 GB | 1 TB | — | 256 GB | 256 GB | 64 GB |
write speed | USB 3.0 speed (up to 640 MB/s) | High-performance USB 3.0, high-speed USB 2.0 | 60 MB/s | — | Higher than USB 2.0, but specific value not provided | 15 MB per second |
read speed | — | — | 70 megabytes per second | 130 megabytes per second | — | 90 megabytes per second |
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Customer Review: Nice 256GB Flash Drive
Joey Mccarthy
Product information
Technical Details
Item model number | CMFSS3B-256GB |
---|---|
Hardware Platform | PC, Mac |
Item Weight | 1.28 ounces |
Product Dimensions | 3 x 1 x 1 inches |
Item Dimensions LxWxH | 3 x 1 x 1 inches |
Computer Memory Type | DDR3L-1600 SDRAM |
ASIN | B00YHL1RJG |
Country of Origin | Taiwan |
Is Discontinued By Manufacturer | No |
Date First Available | May 25, 2015 |
Additional Information
Customer Reviews |
4.5 out of 5 stars |
---|---|
Best Sellers Rank | #731 in USB Flash Drives |
Warranty & Support
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Corsair CMFSS3B-256GB Flash Survivor Stealth 256GB USB 3.0 Flash Drive, Black
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Product Description
military-style Data Transport With Usb 3.0 And Usb 2.0 Compatibility Your Files Are Important - That's Why You're Taking Them With You. Flash Survivor Stealth Usb 3.0 Flash Drives Help Keep Them Safe. The Anodized, Aircraft-grade Aluminum Housing Is Waterproof To 200 Meters, Vibration-resistant, And Shock-resistant. Usb 3.0 Speed If You Move A Lot Of Data, You've Noticed That As Convenient As Usb Flash Drives Are, They Never Seem To Be As Fast As You'd Like. Usb 3.0 Changes The Game. Flash Survivor Stealth Usb 3.0 Offers Read Speeds Up To Four Times Faster Than Traditional Usb 2.0 Drives. It's Fast Enough To View Most Videos Directly From Your Flash Survivor Stealth, Without Having To Take The Usual Extra Step Of Copying It To A Hard Drive First. High-performance Usb 2.0 Support Not Only Is Flash Survivor Stealth Usb 3.0 Backward Compatible With Usb 2.0 - It Offers Great Performance, Too. No Matter How Up-to-date Your Pc Is, You'll Be Able To Quickly Take Care Of Moving Your Files And Be Off On Your Next Adventure. Universal Compatibility It Works With Microsoft Windows, Mac Os X, And Even Linux Without Drivers, And There's No Software To Install. Just Plug It In, And Go. If Your Computer Has A Usb 2.0 Or 3.0 Connector, You Can Use Flash Survivor Stealth Usb 3.0. Proven Reliability With Almost Two Decades Of Building Enthusiast-grade Memory And Components, We've Earned A Reputation For Quality, Compatibility, And Performance. Need Help? We're Available By Phone Call, Email Or Web Forum.
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find this USB drive durable, with one mentioning it survived washing machine and dryer use, and appreciate its industrial quality and functionality across both Mac and PC systems. The storage capacity is praised for its compact design and ample space, with one customer noting it can handle video files, while others highlight its fast upload speeds and excellent water resistance. Customers like its appearance.
AI-generated from the text of customer reviews
Customers find the flash drive durable, describing it as rugged and shock resistant, with one customer noting it survived being washed in a washer and dryer.
"...Pros: -Durable case -Fast speeds -Screw to open and close instead of a pop-off/slide cover Cons:..." Read more
"This Corsair 256 GB thumb drive is designed to take all kinds of abused. I think it is waterproof/shock proof/dust proof. A great buy for the money!..." Read more
"Nice, secure, durable way to store and transport your files...." Read more
"...It is waterproof and the cover protects the drive from damage." Read more
Customers find the flash drive to be worth the money, praising its industrial quality and reliability.
"...I think it is waterproof/shock proof/dust proof. A great buy for the money! ;)" Read more
"...drives out there, but I have several and have found them to be reliable...." Read more
"...The drive remains attached to the Keychain. Other than that, great product." Read more
"Excellent unit I had the smaller 64GB version for 5+ years without issue or incident and upgraded to this model for added space...." Read more
Customers report that the flash drive works well, with one customer noting it functions on both Mac and PC systems.
"The is correct and works as described." Read more
"Works great on either a Mac or PC, even in a USB 2.0 port for my Mac Pro 2012 that the USB 2.0 limitation had very little effect on as it works like..." Read more
"...and dryer to be found during folding/putting away and its still working perfectly." Read more
"...dropped the closed unit on multiple occasions and the use and function didn’t even notice." Read more
Customers appreciate the flash drive's storage capacity, describing it as great and compact, with enough space to bring your computer.
"...This makes them suitable for travel, even wilderness travel...." Read more
"...] Nice, secure, durable way to store and transport your files. Photo, I thought, the drive would separate from my Keychain...." Read more
"...maybe faster thunderbolt device in a USB 2.0 port and it has great storage capacity higher than almost any other keychain metal flash drive at 256..." Read more
"As a flash drive, it's fast, and it's big-bulky. It has a strong and water proof case. Watch those rubber bumpers. They fall off real easy...." Read more
Customers appreciate the flash drive's speed, with multiple customers noting it uploads music quickly, and one mentioning its fast reading and writing capabilities.
"...Pros: -Durable case -Fast speeds -Screw to open and close instead of a pop-off/slide cover Cons:..." Read more
"...Pros: Tough construction Fast performance Lanyard attachment Able to be partitioned Cons:..." Read more
"great transfer speeds! has had at least 2 trips into the washer and dryer to be found during folding/putting away and its still working perfectly." Read more
".../write speed for exporting tracks out of Rekordbox, this thing is blazing fast. Are there slightly faster drives?..." Read more
Customers describe this USB drive as excellent, with one mentioning it's great for rough handling.
"Great flash drive. Appears to be tough as nails with its rubberized cladding, and the 3.0 Bluetooth is fast backup for me...." Read more
"Great little drive" Read more
"Excellent USB drive. Very heavy duty and resistant to drops or water, etc." Read more
"This is a great USB jump drive. I am glad I bought it." Read more
Customers find the flash drive's water resistance excellent, with one customer noting its effectiveness in keeping the device dry when closed.
"...I think it is waterproof/shock proof/dust proof. A great buy for the money! ;)" Read more
"...It is waterproof and the cover protects the drive from damage." Read more
"As a flash drive, it's fast, and it's big-bulky. It has a strong and water proof case. Watch those rubber bumpers. They fall off real easy...." Read more
"...The drives when closed are great for keeping the device dry and rugged use...." Read more
Customers like the flash drive's appearance, with one mentioning that looks and performance complement each other well.
"Nice, secure, durable way to store and transport your files...." Read more
"...That it looks too good." Read more
"...daggers badboy is what im described as, this USB has to match my look and taste, that's why im willing to pay high for looks, I'm constantly using..." Read more
"...256GB flash drive that is waterproof, durable, and looks amazing...." Read more
Reviews with images

Top reviews from the United States
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- Reviewed in the United States on August 18, 2024My previous Gorilla Drive 256GB flash drive took a dump so I decided to switch to this impressive one.
Pros:
-Durable case
-Fast speeds
-Screw to open and close instead of a pop-off/slide cover
Cons:
-It may be easy to lose the case part that screws off, I would have personally made the rubber rings more of an octagon shape to prevent rolling
- Reviewed in the United States on July 6, 2024This Corsair 256 GB thumb drive is designed to take all kinds of abused. I think it is waterproof/shock proof/dust proof. A great buy for the money! ;)
- Reviewed in the United States on November 3, 2022These thumb drives screw into a metal container - which is as close to a bulletproof housing as you are going to get. This makes them suitable for travel, even wilderness travel. They are not the cheapest or highest capacity drives out there, but I have several and have found them to be reliable. No need to get these if all you are doing is transferring files from one computer to another, but if you want to travel with them, or backup stuff for a long period of time, I recommend these as a good option.
- Reviewed in the United States on March 2, 2023The media could not be loaded.
4.0 out of 5 starsNice, secure, durable way to store and transport your files. Photo, I thought, the drive would separate from my Keychain. As in my video, I was mistaken. The drive remains attached to the Keychain. Other than that, great product.Nice 256GB Flash Drive
Reviewed in the United States on March 2, 2023
Images in this review
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Reviewed in the United States on February 20, 2025Excelente USB ! Recomendado ! A++
Excelente USB ! Recomendado ! A++
Images in this review
- Reviewed in the United States on June 3, 2024The is correct and works as described.
- Reviewed in the United States on November 2, 2023I am a DJ and use this mainly to store my music. This flash drive is perfect for DJing if you have a stand alone controller. It is waterproof and the cover protects the drive from damage.
- Reviewed in the United States on August 6, 2021If you're like me and kind of rough on things, this is a must buy. It is very well built. I was going to put it on my keyring but I didn't want to scratch it. I have no doubt that it could of took the abuse though. I use it almost daily to work on a project at the house and on the go on my laptop.
I wish it didn't look as good so I could put it on my keyring but I opened it up and decided I didn't want to get it scratched. That would be the only "bad" thing, if you can call it that, to say about it. That it looks too good.
Top reviews from other countries
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İnanılmaz iyi bir usb Tonmeister Müzik prodüksiyon ya da DJ olan herkesin almasını tavisye ederim. İşlemler çok hızlı yapılıyor ve çok iyi korunaklı bir usb sonuna kadar hakediyor parasını.Reviewed in Turkey on March 21, 2024
5.0 out of 5 stars Tonmeister Müzik Prodüksiyon
İnanılmaz iyi bir usb . Tonmeister , Dj , Müzisyen kısaca müzik ile uğraşan herkesin almasını tavsiye ederim işlem süreleri çok hızlı. Ve çok iyi korunaklı bir usb. Parasını sonuna kadar hak ediyor .
- DarrellReviewed in Canada on October 3, 2021
5.0 out of 5 stars Excellent quality
These are probably one of the best usb storage devices on the market. The only issue I have is that they are costly little buggers. They are clearly double the cost or more of similar products in the same category. I've ordered both the 128 Gb and the 256 Gb devices. Both are solid and reliable. I very much like the protection their covers afford when transporting from place to place. Full aluminum outer casings with rubber seals and fast transfer speeds while using. Now, if only Corsair could lower the cost a little - really?!
- Kylie HuttonReviewed in Australia on February 29, 2024
5.0 out of 5 stars Works as stated
Perfect for our business, the cover protects from dust dirt and liquid.
- RLReviewed in Canada on March 12, 2021
5.0 out of 5 stars works well
performs as advertised
- Andre E-RReviewed in Canada on November 14, 2018
5.0 out of 5 stars Fav!
Best usb I've had to date. Durable, fast and decent value!