Customers express satisfaction with the Ultra 256GB USB 3.0 Flash Drive's large storage capacity, ease of use, and affordable price. Many appreciate its compact size and fast transfer speeds thanks to the USB 3.0 interface. Positive feedback also highlights the drive's convenient portability. However, some users note that the drive can get warm during extended use.
This summary was generated by AI based on customer reviews.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 3 Showing 41-60 of 4,835 reviews
Rated 4 out of 5 stars
Great price.
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Posted . Owned for 4 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Works flawlessly. Great item works as advertised and seems to built sturdy enough to last a while.
I would recommend this to a friend
Pros mentioned:
Speed
Rated 5 out of 5 stars
Fast with lot of room
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This reviewer received promo considerations or sweepstakes entry for writing a review.
I wanted to get a large flash drive to backup all my important files and photos “I’ve amassed a lot”, and saw the prices of flash drives has come way down. I started using flash/thumb drives for work back when the 1gb was considered a large drive, and when they announced a 4gb drive we all though “who’s going to put that much stuff on a thumb drive”.
I’ve also used about every brand of flash drive available and still have a few of the old 1gb ones laying around and the only ones still working are the SanDisk branded ones, one in particular is the SanDisk Cruzer Titanium 1gb, the super heavy duty all metal bodied drive you won’t ever see again, and it still works perfectly.
Physical Impressions:
This 256gb drive is physically the size thumb drive have pretty much been for quite a while now, the USB plug is retractable keeping it safe and secure when retracted. There isn’t an activity light so you won’t know if it’s doing anything, “not important for me as it’s on the back of my desktop computer”.
Speed:
The flash drive is USB 3 and backwards compatible. Speed wise using Crystal Disk Mark I’m getting around 116MB/s Seq read, and 50MB/s Seq write, not bad at all and I’ve attached a screen shot of the test.
Included Software:
The really nice thing is the software that’s included with the flash drive. You get one year of Rescue Pro Deluxe, “the key is inside the packaging” and with it you can recover lost and accidentally erased files. It works for everything not just this thumb drive. I took a file folder with photos in it, about 1gb worth on the SanDisk drive, deleted it, emptied the recycle bin, and then had the software scan to recover it. Now it does take a while to scan this drive, “it’s big” so sit back or do something else while it goes about its business. After about an hour it was able to recover all the files in the test folder I created, now this will depend greatly on if you’ve written files to the drive after losing/accidentally deleting files. For the most accurate and thorough recovery you don’t want to be using the media you are doing the recovery on till after you’ve recovered your files. You’ll also have to rename your recovered files after it has finished running, but you can click on them to view in the recovery window so you know what you are renaming.
Also under the flash drives main directory is the SanDisk Secure Access application. When you run it the first time it will ask that you set up an account and password for the secure folder. After entering your password you will be greeted with a simple file manager window. Just drag and drop files into the top secure area and it will encrypt all the files. If you view the drive with a standard file manager like the one in Windows 10 you will see the folder name but there’s nothing in them to view, you will have to use the Secure Access application to view and unencrypt these files and folders. The whole process is reasonably fast too. I copied all my important stuff, about 175gb, in a couple hours, not bad for that much data.
There is an upgrade option for the standard software, you can get a lifetime license for $15, “I think that’s reasonable just haven’t done it yet”. It gets you 1024 bit encryption, automatic backup, syncing between devices, and sharing with others. I’ll probably be upgrading to this in the future as it adds a lot of for low cost.
I’m keeping all my medical files on this as I do have some health issues and like to keep my entire medical easily portable if I happen to go see a new specialist. This way I can always have a backup of my records and there’s plenty of space on this drive for x-rays and, MRI’s, CT scans and Ultrasounds. Plus with everything being encrypted “I used a very secure password” I won’t worry much about someone getting my personal information if I do happen to lose the drive.
Opinion:
This is an excellent thumb drive, there’s plenty of space for a lot of files, and I mean a lot. The included software allows you to encrypt your sensitive data so you won’t have to worry about it falling into the wrong hands and the recovery software makes it pretty easy to recover any file you may have accidentally lost. The new flash drives from SanDisk are a real value.
I would recommend this to a friend
Rated 5 out of 5 stars
Awesome
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This reviewer received promo considerations or sweepstakes entry for writing a review.
I really like the lighting fast speed of this great quality charger, I am really happy
I would recommend this to a friend
Rated 5 out of 5 stars
Super Thumb Drive!
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Posted . Owned for 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This is a fantastic thumb drive for the price. I bought to store my music collection, which are all lossless FLAC files. I then plugged the drive into my AVR, so all of my music is easy to access and play through my sound system. Works great and has no issues rapidly transferring the high data FLAC files.
I would recommend this to a friend
Pros mentioned:
Price
Rated 5 out of 5 stars
Decently fast, interesting storage services
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This reviewer received promo considerations or sweepstakes entry for writing a review.
Cloud continues to be all the rage in 2019, and SanDisk is riding the wave with the new SanDisk Ultra USB thumb drive. It offers a generous 256GB of storage for a reasonable price, but also includes a year of cloud backup for said drive. 256GB of cloud storage for a full year is included making this disk an excellent value if you are looking for a cost effective backup drive.
The SanDisk Ultra 256GB is not overly different from other SanDisk drives. It's clad in a semi-gloss black with a slide mechanism to protect the type-A usb port when not in use. It's a tried and true design, and SanDisk rightfully doesn't mess with what works.
Performance wise, the disk boasts performance up to 100MB/s. This claim is not exaggerated for sequential read speeds (in other words, large files). Crystal disk mark placed sequential read speeds around 135MB/s. The drive appears to use a fast write cache buffer.
Sequential writes hover around 65MB/s for the first gigabyte or so but sharply and predictably drop off to 20-25MB/s. Writes in bursts benefit from this cache, but it can easily fill up during large writes. The cache recovers pretty quickly however, so writing performs well in small batches. This squarely puts the SanDisk Ultra in the budget category as far as performance goes.
The real interesting proposition with this drive is the cloud storage that comes with it free for the first year. You can backup all the data found on your drive - meaning that if you have a 256GB drive, you can backup that amount of data to the online 'FlashBack' service. I tested this theory by copying our family photos of around 70GB to the drive. While this took quite a while to accomplish, the backup took place during the copy, so I left it overnight. The FlashBack service not only had a copy of all my files, but presented them with a friendly photo browser, and broke down my files based on metadata, type, and provided a handy search feature. The user interface is modern and worked well with my files. You can share links to files, which is a plus, and manage those links. Essentially you could share out a document with someone, and then revoke the access to that link by simply deleting the sharing link. It's clear there was a lot of time spent to ensure a positive user experience with this service, which is appreciated. The app used to do the backup is unobtrusive and seemed to work well. It does get angry if it’s in the process of backing up files and you unplug it. It does take time to get to resuming a backup. If you delete files, they’ll go in the ‘Trash’ bin in FlashBack, and can be restored for up to 30 days.
The first year is on the house, but after that pricing looks reasonable. At $9.99 for the 256GB drive a year, it’s hard to argue that’s a bad deal. Having access to any of your files remotely and securely even with your pc off, and your thumb drive in the drawer is a nice selling feature. Do keep in mind that while SanDisk does look like they did a decent job with security, while still being able to provide sharing features, etc - it’s still hosting your data remotely. Be sure to secure your account with a good password. I’d like to see them implement two factor authentication to help bring further peace of mind to those backing up sensitive data and/or financials.
The SanDisk Ultra 256GB is a decent performing everyday USB pen drive with a large capacity.
The real selling feature of the Ultra series here is the FlashBack service, and it seems to really hit the nail on the head. If you’re looking for a good backup drive that can double as a carbonite or other backup service replacement - this might fit the bill if your needs are simple. In any case, it’s a decent alternative to using Google Drive and offers a ton more storage for the money (and gives you that storage free the first year). This new model of storage actually seems pretty compelling, I highly recommend trying it out.
I would recommend this to a friend
Rated 1 out of 5 stars
USB
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
It broke the first day, lost all data on it, could not fix it
No, I would not recommend this to a friend
Pros mentioned:
Speed
Rated 5 out of 5 stars
Massive storage in a mini size
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This reviewer received promo considerations or sweepstakes entry for writing a review.
I purchased this USB flash drive because I wanted to have access to my music and video files on my new XBOX ONE S. The USB ports on it support 3.0 so the transfer is quick and files load immediately. For the price, you can transport a lot of files and content. There are computers that don't even have this much storage... There is a handy loop on the end of it so you can attach it to your keys or other items.
You can also set it up so that no one has access to your files or you can designate certain files to be accessible and keep the others inaccessible. It's a nice plus. The small switch/button on the flash drive allows you to slide out the usb access port when you need it and slide it back into the flash drive when you are not using it which keeps it protected.
SanDisk makes good, high quality products. I have many other flash drives and SD cards made by them that have never failed me.
To be honest, the average person would never use the total capacity of this flash drive but digital photographers that work with RAW files, 4K videos and High Dynamic Range content use a lot of space so individuals that work with these types of files would appreciate the volume as well as the speed of this flash drive.
I would recommend this to a friend
Pros mentioned:
Ease of use, Price, Speed
Rated 5 out of 5 stars
Fantastic Flash Drive!!
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This Sandisk Ultra Plus 256gb usb 3.0 flash drive is really a must have for people that need to store movies, audio books, photos, videos, & files of any kind from their mac, pc, or laptop. This 256gb usb flah drive is super fast and quite easy to use - just plug in & transfer your files to the drive! I have already loaded my apps, music, & personal files onto it, so my laptop runs much, much faster! I experienced no issues what so ever with this device. Sandisk is a top brand for its flash drives and micro sd cards, so I feel confident about its performance and longevity. The flash drive has so much storage space on it and my files are safe & organized. The quality and performance is great! I would absolutely recommend this flash drive to my friends & family. I would definitely buy this product again! Especially since the cost of this flash drive was really reasonable.
I would recommend this to a friend
Rated 4 out of 5 stars
A Flash Drive with Cloud BackUp
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This reviewer received promo considerations or sweepstakes entry for writing a review.
I really like that the Sandisk USB 3.0 256gb flash drive has plenty of space for all of my music files, videos, and documents. Even though it is stated as 256gb drive, actual available storage space is 233gb. Build quality on the drive is poor. The all plastic enclosure is loose and wobbly and it gives the impression that it can break off if inserted or removed with force. You’ll need to handle this drive with care.
I performed a non-scientific test of write speed. I transferred 27 gb of music files to the flash drive and it took 27 minutes, so 1gb/min. The drive does become warm during file transfer, but the amount of heat generated appears normal.
The flash drive comes with two useful software to enable file security and access. The first is Sandisk’s Secure Access Vault which is a file encryption software. You simply create a password and encrypt your files by dropping them into the Sandisk Vault. They are then electronically locked or encrypted. Nobody will be able to access your files without the decryption password. The only way to access the files is to enter your password in the Vault.
Another handy tool is Sandisk Flashback. Flashback automates the backup process by transferring the entire contents in the flash drive to Sandisk’s Cloud. You’ll be able to view and download the contents in the flash drive online without having the flash drive physically present. This becomes handy if you either left your flash drive at home or, worse, lost your flash drive entirely. You can recover all of your backed up content online. You can also share files with anyone by simply sending them a link to access the files in your Sandisk Cloud without having to attach large files onto an e-mail.
In order for all of this to function, Flashback software needs to be installed locally on your desktop or laptop computer to upload files to Sandisk’s Cloud server. You’ll also need to create an account on the Sandisk Flashback website to access your files in Sandisk’s Cloud server. Flashback is free for the 1st year, after that you’ll need to pay an annual subscription fee to continue access to your backed up files in the Sandisk Cloud. I’ve attached a picture showing the subscription pricing at the time of my review.
One limitation of the cloud backup feature is that backing up to the Sandisk cloud only works if you have the flash drive connected to a computer that has the Flashback software installed. In practice, there are numerous instances where you’ll be using the drive at a workstation, say at work computer or a friend’s computer, where the Flashback software isn’t installed. The flash drive becomes a regular, run of the mill storage drive. There’s nothing wrong with this, you just simply need to be aware that no Cloud back up is being performed until you plug the flash drive back into your computer that has the Flashback software installed.
Another limitation is that if you have files encrypted in the Sandisk Vault, those encrypted files will naturally remain encrypted, as they should, when backed up to the Sandisk Cloud. However, there is no way for you to access the encrypted files online in the Sandisk Cloud website since you won’t be able to decrypt the files without the Sandisk Vault. The encrypted files can only be decrypted locally from within the flashdrive.
All in all, this is a decent high capacity flash drive with some extra bonus features for securing your files and automatically backing up your flash drive to the cloud. I would recommend the flash drive.
I would recommend this to a friend
Pros mentioned:
Ease of use
Rated 5 out of 5 stars
Great USB
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Great and easy to use USB with good storage size. Would recommend
I would recommend this to a friend
Pros mentioned:
Speed
Rated 5 out of 5 stars
It works
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Posted . Owned for 11 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
It's a USB drive that has the storage, has good speeds. Seems to last too.
I would recommend this to a friend
Pros mentioned:
Speed
Rated 5 out of 5 stars
Wonderful device.
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Small in size Big in performance. I own several of these thumb drives and love the solid performance. I have never had a failure with data on this device and speed is very satisfying. I’ll always buy this drive when I find a good price. I would choose this model over others.
I would recommend this to a friend
Rated 5 out of 5 stars
Got Space?
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
"I recently purchased the SanDisk Ultra 256GB USB 3.0 Flash Drive in black, and I couldn't be happier with my purchase. This flash drive is a reliable and efficient storage solution for all my needs.
First and foremost, the storage capacity of 256GB is incredible. It allows me to store a vast amount of data, including documents, photos, videos, and more. Whether I'm transferring large files or backing up important information, this flash drive has more than enough space to accommodate my needs.
The USB 3.0 technology is a game-changer. The transfer speeds are noticeably faster compared to older USB models. Transferring large files is now a breeze, and it saves me valuable time. I can easily move my files between devices without any hassle.
The build quality of the SanDisk Ultra flash drive is excellent. The sleek black design not only looks great but also feels sturdy in my hand. The retractable design protects the USB connector, preventing any damage or dust buildup. This makes it a reliable option for everyday use or when I'm on the go.
SanDisk is a brand known for its reliability, and this flash drive is no exception. I've been using it for a while now, and it has never let me down. I trust it to keep my important files safe and secure.
Overall, I highly recommend the SanDisk Ultra 256GB USB 3.0 Flash Drive to anyone in need of a reliable and spacious storage solution. Its fast transfer speeds, ample storage capacity, and durable build make it an excellent choice for both personal and professional use."
I would recommend this to a friend
Pros mentioned:
Ease of use, Speed
Rated 5 out of 5 stars
better than i thought
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Posted . Owned for 2 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
i liked that it has a lot of storage space compared to the smaller usb drives. transferring files is so easy & fast. i love that it’s a small device to carry around.
I would recommend this to a friend
Pros mentioned:
Ease of use, Speed
Rated 5 out of 5 stars
Does what's advertised
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This reviewer received promo considerations or sweepstakes entry for writing a review.
Needed an external drive for laptop that has a 128G internal flash drive. For business use meaning storing documents, pictures and presentations only. Didn't need a bulky terabyte drive. This product is much more portable and faster than and external drive.
I would recommend this to a friend
Pros mentioned:
Speed
Rated 5 out of 5 stars
Flash drive
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Posted . Owned for 1.5 years when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
More and more storage on my USB flash drive and it’s super quick
I would recommend this to a friend
Pros mentioned:
Ease of use, Price, Speed
Rated 5 out of 5 stars
Lots of space and very fast
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Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
I like the Sandisk usb flash drives because of how simple they are to operate. They are reliable, fast and how a good amount of storage at a great price. I alos like how the the thumb drive has a slide to protect the usb connection.
I would recommend this to a friend
Pros mentioned:
Speed
Rated 5 out of 5 stars
My personal favorite flash drives after many years
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Posted . Owned for 2 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
I have had this drive for a few weeks now, but I've used the Ultra's many, many times. I probably have 10 of these in varying capacities and not a single one has caused me any issue. If I'm going to get a flash drive that I actually want to use to store something of mild importance, this is going to be the one.
Also large capacity is nice, and the speed is decent, much, much better than a USB 2.0 drive. If you have USB 3.0 ports, get a 3.0 drive. You'll save so much time copying.
I would recommend this to a friend
Pros mentioned:
Speed
Rated 5 out of 5 stars
SanDisk-Ultra 256gb Flash Drive
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Posted . Owned for 4 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Exactly the size 256gb, I needed. Quick & easy downloads & retrieval.
I would recommend this to a friend
Pros mentioned:
Ease of use, Speed
Rated 5 out of 5 stars
Sturdy, High Capacity USB Drive
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Easy to use and durable...love the retractable USB to protect the most aspect of the drive. Quick to move files...capacity is awesome.