Customer Ratings & Reviews

This USB flash drive write between 10 and 40 MB/s but, read at 150 MB/s

This SanDisk Ultra is several times faster than cheaper flash drives. Its a great price.

Strong USB port and quite really handy when downloading / storing stuff on the go!

Just as expected. A 32 GB SanDisk thumb drive. Black in color.

Bought this to to fix my computer (Reinstall Windows 10) and worked ok A little hard to use

I bought this to keep a work files backup as I move from office to/from home. Occasionally I also use it for general data backups of a temporary nature. Larger file transfers to the new drive are not as fast as I expected. But adequate for my current needs.

Portable, retractable, you will never loose a cap again

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.)

Great product easy to use really fast faster faster

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.

Good flash drive for store and transport my files securely with this SanDisk Ultra 32GB

Wonderful flash drive for securely storing and transporting files

Good stuff, nice and compact easy to use and has a decent amount of storage

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 flash drive, easy to use and fast plus lots of storage!

Good size, easy to use and gets the job done. Perfect!

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.