Customer Ratings & Reviews

I bought this memory stick to save some of my documents, did my purpose.

I have been an avid SanDisk drive fan, whether it be SSD, compact flash, SD, or their older USB drives. However, over the past few years, I have found their USB drives lacking, and getting worse. Previously, I purchased some USB 2.0 Cruzer Glide drives, and found them painfully slow when writing compared to others I had from other companies. This week, I wanted to give them another try by buying the newer USB 3.0 Ultra (SBCZ48-032G and -128G); the price was very attractive when on sale. Bottom line, I am returning the Ultra drives. They are still too painfully slow to use. I bought USB 3.0 drives and expect to get somewhere near that speed; I do not expect USB 2.0 flash drive speeds with a USB 3.0 device. Comparing these drives to a PNY 128GB USB 3.0 drive I purchased a few years ago, I did some testing/benchmarking. My tests were simple: 1) Use CrystalDiskMark 7.0.0f to benchmark the drives; this is a commonly used tool. 2) Copy 15 files, 8.62 GB total from a Corsair MP600 NVMe drive to selected USB Drives (all using USB 3.0 ports), and as a checkpoint, to my local NAS (this latter to ensure the MP600 NVMe drive was not the bottleneck). Summary (see attached picture as well): - The PNY drive performed well and within what I expected regarding speed. It copied the files quickly, roughly 88 MB/s consistently, taking approximately 1 minute, 41 seconds. - The Ultra-128 ran the benchmarks OK, but when it came to real world usage, it fell on its face after what appears to be that its internal cache was filled; it went from roughly 78 MB/s down to about 12 MB/s after a few seconds of copying. It took approximately 3 minutes, 50 seconds to copy the same data to the Ultra-128, more than twice the time required by the PNY. - The Ultra-32 ran the benchmarks fairly, but its internal cache appears to be smaller, and the 1GB benchmarks picked up on it. Unfortunately, the drive died (become "read only") and I could no longer test it. (And for those tech savvy folks out there, yes I did try DiskPart and other tools to fix it.) From untimed tests, the 32G drive performed slightly worse than the 128GB drive. These benchmarks/tests were performed with a home assembled machine: - Windows 10 Pro - Asus TUF Gaming X570 (WiFi) motherboard - AMD 3800X CPU - Corsair MP600 NVMe 1TB Drive - Corsair Vengeance memory, running at 3200MHz. SanDisk, time to pick up your game, or someone else will come along and beat you at it. If your SD cards are now able to handle up to 170MB/s write speeds, why can your USB flash drives not handle even half of that? (Yes, I know, comparing apples and oranges.)

Very very very poor quality. I used it only once. When I’m removing it from device chip came off.

Good cheap usb boot disk Super fast read and write

Copying a file starts out at 30-40MB/s (not 100MB/s) and then drops to 12MB/s after a few seconds. Also it gets hot. You'll be better off with a USB 2.0 drive.

I’m really impressed with the SanDisk Ultra 32GB USB 3.0 Flash Drive! It offers fantastic performance with fast read and write speeds, making it a breeze to transfer large files quickly. Whether I’m moving documents, photos, or even movies, everything transfers in no time. The design is sleek and compact, fitting easily into my bag or pocket, and the black finish looks really professional. The USB 3.0 connection is super reliable, and I’ve never had any issues with it, even on older machines. It’s plug-and-play, so there’s no hassle with installation. At 32GB, it provides plenty of space for my everyday storage needs, and I love that it’s affordable for the quality you’re getting. Plus, SanDisk is a brand I trust for reliable products. Overall, this flash drive is an excellent buy. It’s fast, durable, and offers great value. Highly recommend it for anyone who needs a dependable USB drive!

Great little unit. It slides open and closed easily. Nice that it has a "loop" for a keyring to be attached if you want. Files transfer quickly being USB 3.0. And it';s a SanDisk - I've been using their flash cards for 20+ years (remember SM cards?) with zero failures, so you can have confidence your data is stored safely.

Fast up and down loading. Rugged construction. Ideal for quick data transfer to a portable storage device. 3.0 USB technology works well in reducing transfer times. Great value for the price.

This is a very good flash drive. It's compact, quick, and has substantial space. The price is good compared to similar items.

This is a great disk,with 32 gb of storage! Simple to use and SUPER SUPER FAST! At this price you won't find a Better product! With a well know name Sandisk!

This flash drive was very functional at I purchased it at a great price. Very compact, easy to use and a lot of storage. I will purchase one again when I need the storage.

One of the best ver. 3.0 High speed flash drive I have purchased. Great price for the 32 GB size plus you can lock all of your files. Size is easy to carry and easy to use.

I have a lot of SanDisk Flash Drives, and I have had really good luck with them. The transfer speed seems good on the USB 3.0 version, and they rarely fail. (I really take care of them, though, and don't throw them in my pocket with keys and coins, or get them near magnets, or spill water on them, etc) This 32GB flash drive is a great size for transferring files between two computers, and gifting or storing home videos or audios. I even have my Windows 10 rescue files for one of my laptops on one of these, although it is probably on a larger version.

This drive is much faster than USB 2.0 Flash Drives. You can copy or write large files in a lot less time. I've had a SanDisk Ultra Backup flash drive for over 6 years and have not had a single problem with it. The only negative thing is when connected to a USB 3.0 or faster port the flash drive will get warm after using it for a couple of minutes. Overall, giving my great experience with my older SanDisk Ultra Backup flash drive. I would recommend this flash drive to any who want a reliable long lasting flash drive with an excellent warranty coverage..

Finally, I can keep my private files safe and not have my mom find out about them, you know? My name's Eugene, and I have my own personal computer, but still my mom goes on it to pay her taxes, and I am worried that she will stumble across something she's not supposed to. So I bought the SanDisk - Ultra 32GB USB 3.0 Flash Drive, and let me say, this thing is a dream come true. I can plug this baby into my PlayStation 3 and watch all my favorite private movies directly on my big screen Samsung TV. There's even protective software that comes pre-loaded onto the drive so you can protect yourself from having strangers snoop your stash. The 32GB Capacity is great, and the front end slides back and forth to protect the device. Even my best friend Leet Larry loves it, because I can bring over my favorite private movies, and we can watch them together on his Xbox. The only thing I recommend is formatting it to NTFS, because FAT32 is for chumps, and usually won't let you put a high definition movie on it because it won't copy files of a gig. Most of the private part files I download are in 1080p and are roughly 1-2gb in size. I would highly recommend this product, as it's compact, has a robust amount of storage space, and is USB 3.0 compatible, making the transfer time super fast.

This SanDisk Ultra USB 3.0 Flash Drive works exactly as you would expect it to. Transfers to and from the card seem to work quite quickly. The drive is about standard size, and like many others, has a slide button to slide the USB connector in and out. It also has a blue light that indicates readyness, and transfer activity. The drive is labeled in a way that makes it clear which side needs to be turned up for it to be inserted properly. (I hate drives that you have to try one way, and then the other, because you can't tell simply by looking at them which side should be turned up.) Finally, there is a molded, hole, in the curve at one end, to allow the drive to be carried on a key chain. The one negative I found, which is the reason this is a four-star and not a five-star review has to do with the software on the drive. There is an executable that I believe has to do with drive security. When I ran it, it recognized that there was an update for the program, downloaded the update, but then the update would not run. I paid full Amazon price for this flash drive. I wrote this review just to try to help others learn a little about it. I hope you found this review helpful. On the other hand, if you did not find this review helpful, I’d be interested in hearing why, so that I can attempt to edit it and make it more helpful to both you and others. If you leave a comment on the review, suggesting how it would be more helpful, I promise to respond to your comment, and to attempt to incorporate your suggestion in my review, if it is at all possible for me to do so. My goal is to write reviews that help people, as I have been helped by the reviews others have written. Thanks!

I bought this product to hold text documents and presentations, but so far I've mainly been using it to transfer games, since the internet at my house is blazing slow. The first thing I used it for was to transfer Guild Wars 2, thus turning what would have been a week-long download for me (and probably three or four hours for someone with better internet) into a matter of three or so minutes. Given that the file size was around 23 gigabytes, this is pretty impressive. It is worth noting that the initial format of this flash drive won't allow you to put in files larger than four or five gigabytes, but you can fix this fairly easily by right clicking on it and going to format, then instructing it to convert to NFTS (just back up the proprietary software elsewhere if you plan to make use of it, because reformatting will wipe it). Once you do that, you can easily transfer files in the twenties of gigabytes. The retracting connector is also a nice touch. It helps ensure that the USB drive will not get bent out of shape if you stick it in a backpack with a bunch of other electronics or somesuch.

Works like a charm and takes up minimal space on my desk

I love these SanDisk flash drives and have them in all sizes. This time I purchased one for myself and another for a machinist friend who is studying computer design and needs to carry large files from home to the University. Sorry for the sexist tone here, but he's a guy, and I thought the design of this could withstand quite a bit of punishment, as he runs a busy machine shop, with it hanging from a lanyard. And there's no cap to lose. I find this drive to be reliable and blazing fast, compared to its predecessors.

I like SanDisk flash drives and SD cards, especially when I can get them on sale. I think I paid around $10-$15 for this SanDisk - Ultra 32GB USB 3.0 Flash Drive, and it is a great product. You can back up personal files off your computer, photos and video, or use it to transfer files to a friend, family member or client. They hold a lot and are pretty robust in my experience. I've never had a SanDisk flash drive go bad on me yet.