Customer Ratings & Reviews

Very slim and compact, transfers and stores data very quickly. Large capacity for quick backups.

good price . fast data transfer. sad that it's lost

It's literally a flash drive, what can go wrong with it?

Worth value for the money spent for USB-C type pendrive

Great price and works perfectly. Can't beat the value either. Would buy again.

Does what is expected of it as an extra "thumb drive". The plastic end is slightly angled, which makes it easier to remove from your computer. SanDisk reliability as expected.

Bought this to hold all Of my photos as a back up to My back up. Don’t lose your photos. Keep a back up for your back up. Photos cannot be replaced.

Super small form factor and quick and reliable. Use it everyday and has been highly reliable so far

Works as advertised. SanDisk makes good products. Would buy again.

Awesome compact secure thumb drive. Affordable, spacious and well built for price range.

Got to copy pictures from phone to prevent loss when phone gets full. Works great!

Fast and easy tranfer all my photocatalytic film my phone to the usb fast and easy

Great external stick. Backed up my entire iCloud in matter of mins.

This is going to be MUCH shorter than my usual reviews…not because I have little to say, but because, in all honesty, there isn’t much that can be said about a thumb drive. For the most part, they either work, or they don’t; they either equal the manufacturer’s claims, or they don’t. in the case of the SanDisk 256GB Ultra USB Type-C Flash Drive, it does work, and it is quite fast, but it does NOT “equal” the speed claims. Starting with the design, it is somewhat on the cheap side. SanDisk has always produced high-quality products…so, when I first opened the package, and felt the drive, I was slightly disappointed. It’s not “super-cheap”, but it’s also not “solid”. The primary plastic casing is thin, and somewhat flimsy. Worse, the sliding mechanism appears poorly constructed, and can be slightly difficult to open…and, even more difficult to close. Thankfully, that’s the worst I can say. In the speed transfer department, SanDisk claims “write speeds that can transfer a full-length movie in under 30 seconds”. The first ‘problem’ in determining what a “full-length movie” actually is. Is it 2 hours? Is it 2.5 hours? Is there even a ‘standard’ anymore? Since there is no definitive length, thus, no definitive file size, I copied two different movies (both 1920x1080 resolution @ 23.98fps), of two different lengths, with two different bit rates. First up was “Star Trek: Horizon” (a Paramount-sanctioned’ fan film’) that’s 1hr 42min, in MP4 format, and 994MB is size. This is compressed with video @ 1222kbps, and audio @ 125kbps @ 44.1kHz. the file transfer took 33 seconds, which is well under one minute. At this point, one would think the thumb drive comes close to SanDisk’s claim of “under 30 seconds”, but doesn’t quite match said claim. Next up was “Batman: The Dark Knight Returns”, which is 2.5 hours in length, in MKV format, and consists of two files which combine to be 9.84GB in size. The video is @ 1509kbps, with audio @ 1509 kbps @ 48kHz. Obviously, the files size is 10.13 times that of the first movie, so its transfer time of 5:28 (9.85 times the time of the first movie) is understandable…but, this is WAY longer than the claimed “under 30 seconds”. Of course, this takes us back to the question of “how long is a ‘full-length’ movie? Also, the file format, and recording-compression will make a difference. So…what do I truly think oof the SanDisk Ultra USB Type-C drive? Honestly, I like it…not by a ‘huge’ amount, but, I definitely do like it. Its compact size is a huge improvement over the size of traditional (ie. USB Type-A) flash drives, and it is considerably faster than Type-A drives. At the same time, the actual speed WILL depend on what kind of USB-C port you plug it into, as all USB-C ports are NOT equal, as there ARE two different variants – USB-C 3.0, and USB-C 3.1. the 3.0 variant maxes out at a theoretical 5Gbps, while the 3.1 variant maxes out at a theoretical 10Gbps. As the SanDisk thumb drive transfers “up to 150MBps, that’s only 1.2Gbps…or, barely more than 1/10 the max speed of USB-C 3.1. put another way, even when plugging into a USB-C 3.0 port, the SanDisk USB-C flash drive doesn’t even come close to maxing out the ports true data transfer rate. However, in-truth, there are very few USB-C devices capable of even coming close to USB-Cs (3.0 or 3.1) “max data throughput”. Getting back to my question, as I said, I do like it. The smaller size is MUCH easier to transport than a traditional USB-A flash drive…and, with almost all computers these days having at least one USB-C port, it makes sense. Even better, as more & more mobile devices switch to USB-C ports, this makes this flash drive usable on an even greater number of devices. Best of all, it makes transferring files between computers, and mobile devices, incredibly easy, and incredibly fast. My ONLY complaint is the build quality, and the difficulty in opening/closing the drive. For this, I lowered the rating by one star. Disclaimer: This product was provided free, or at reduced cost, for the purpose of reviewing the product. Nevertheless, the above review, be it positive, negative, or somewhere in-between, is a 100% honest review, and the price paid played absolutely no part in my review.

I used to love the Western Digital USB thumb drives. They had such easy functionality - they were sturdy without being stiff, light without being flimsy. You never had the feeling you were accidentally going to break the thing. I also really liked their book series of portable drives. SanDisk won me over with their Extreme Portable SSD series which has a much nicer feel and much smaller surface area over the WD Book series, no moving pieces, and great design/UX with space for a clip or keychain hook, so when I heard SanDisk was doing USB-C flash drives, I was PSYCHED. This SanDisk flash drive is fantastic from the perspective of having a HUGE storage presence and the ability to connect easily to phones or tablets because of the USB-C interface. I've been hoping for a really good USB-C flash drive since Apple made USB-C ports standard on MacBooks and it seems like the market is finally catching up. In terms of a flash drive: it's fast and connects easily without any need for additional software or drivers or anything else. It's good to go. In terms of the physical design: I nearly broke the thing several times just trying to get the "slide" to work. Because of how the retracting USB-C port works, you have to grip the side or the back, and there's no real "grip". I suppose you could just leave the USB-C port out, but... since these tend to get shoved in pockets and such, not the best option. I still haven't figured out how to do this well. The lack of an included keychain attachment also is a huge gap as these can sometimes make tricky/sticky physical interfaces a lot easier to manage. While transferring large files over time, the flash drive also generated a LOT of heat. As in: it was physically hot to the touch after only 15 minutes of use transferring 2 multi-gig files. All in all: wait for a different physical case for this model. It works exactly as you'd expect a flash drive to work, but the physical limitations of the design are just so frustrating you'll probably wish you'd spent your money elsewhere. When SanDisk brings this flash drive up to the level of design as the rest of their smaller drives, dive in without hesitation.

I don't like the software. It is very slow. I'd rather just copy directly thru Apple OS.

Very thin and extremely small! SaDisk is truly the #1 name in flash storage!

The Sandisk Ultra is a fast USB-C flash drive that works with either your computer with USB-C ports or a phone with the same. Its all-plastic design comes in at less than 3” x 1” in size, making it very easy to attach to your keys or throw in your bag without taking up a wide amount of space. When not in use the USB port retracts back into the plastic case, though the tip remains exposed to the elements (unlike drives that have a removable cap). Speeds are extremely fast, up to 150 MB/second read and a slightly slower write speed (as with any writeable media). When transferring data from my phone to the device, I’m able to transfer a 1 GB file (movie) in around 30 seconds. Transfers are made easily if you’re using a phone with the “Memory Zone” app which you can download from the usual app stores. The “Memory Zone” app allows you to do a full sync of your phone to the drive if you don’t already backup your phone with Google or Apple. The app works as a full drive explorer, so it can see your internal memory, any inserted SD cards (Android), and of course the flash drive, thus the app isn’t limited to use only with the drive. None of the files on the flash drive are encrypted by default, which starts a whole series of issues with the device and SanDisk as a whole. First, you have to download a separate .exe/.pkg file (for Windows or Apple) to get encryption. Second, it only works on a computer and does not work on your phone, so any files encrypted on your computer cannot be accessed via your phone. Likewise, you cannot encrypt files on the drive that were added from your phone. Finally, and perhaps most importantly, the encryption program has not been updated since 2017 (downloaded directly from SanDisk’s website). There are plenty of new and evolving threats over the past 4 years, so a program that “encrypts” that isn’t regularly updated is a serious security concern. Add to that the fact it’s only using 128-bit AES *and* is 4+ years old, it’s probably something to just avoid for the truly security conscious. Cons: - The slide to move the USB-C tip out doesn’t slide well, and you find yourself fighting with it. - The metal USB-C tip and the board that remains inside the plastic gets EXTREMELY hot when using it. And not just from leaving it in use or doing massive amounts of transfers. Like it gets hot within 60 seconds of being inserted in your phone. - The drive requires you to click on the app or the notification to “safely remove” the device from your phone. If you don’t, you’ll receive a notification that you’ve “unsafely removed” the device with a “click here to reboot” your phone notice. What is this, 1995? The last time I felt the need to “safely remove” a USB stick was with Windows 95. Are we not past that yet? - The all-plastic design does worry me for durability, but so far no issues. I mentioned attaching it to your keys, which clearly you can do, but just know the loop for the keys is all-plastic, as well, so if that breaks it will quickly separate from your keyring. - I find it annoying with companies name their app something obscure and a search for “San” or “Disk” doesn’t locate the app. You have to remember it’s called “Memory Zone”. It wouldn’t take a lot to call it “SanDisk Memory Zone” to make it easier to search for. - No phone-to-drive encryption option. Summary: The drive is a good solution if you’re looking for an easy way to transfer files between 2 computers or a computer and your phone. It is a fast drive with plenty of space for your files, but has some considerable cons, namely the overheating, that make for some concern

1st impression: Wow, this thing is tiny. 2nd. impression: Wow, it's fast too! Over all impression, it's well built, feels like a premium product, no sharp edges to snag on stuff and the USB C connector tucks back inside the body to keep it safe when not being used. I used mine to transfer a bunch of video files from my Mac, to my Windows laptop, and I also transferred the same files using my Galaxy Note 10+ as the transfer method, and the SanDisk Ultra256GB flash drive was 3 to 5 times faster. I'm very impressed with my new flash drive, it's sleek, tiny, and has more storage than my actual computer hard drive did up until a few years ago. One last thing that I really liked: It just worked. It worked with both my Mac, and with my PC without me having to download any drivers, or format anything. There was no drama, I didn't have to download any programs to get it to work. I wish all the gear I bought was this easy!

SanDisk - Ultra 256GB USB 3.0 Type-C Flash Drive is a decent drive but with a couple of surprises. Unfortunately, it has a cheap plastic look and feel. It is relatively fast but why they chose 3.0 rather than having it be a 3.1 drive I don’t understand. I compared this drive to a couple of others from the same manufacturer on the same computer transferring large video files. Transferring files off the drive to the computer resulted in fast transfers at a consistent feed. When copying to the drive a lot of data it seems to go quickly, then after about 2 minutes, it starts slowing the transfer rate immensely even if the video files it is copying are small (the first files were 3x larger). Comparing it to a 3.1 type A drive of the same manufacture (which is rated faster) it outperformed the Type A drive on downloads but was quite a bit slower on uploads. The drive is formatted in ExFAT for compatibility. Reformating it NTFS did not show any speed increase. Comparing it to an Ultra Dual Drive Luxe by the same manufacturer which is 3.1, metal, with both type C and type A connectors and can be found for a similar price – The Luxe outperformed the Ultra in physical size, quality, and speed - both upload and download. The Ultra will also work with phones or tablets with a USB-C, and I had no problems with using this on these devices. Both the Ultra and the Luxe had software for phones to assist in backup, aggregate, and freeing space. It also has Secure Access software. I would go for the SanDisk Luxe over this drive for the reasons mentioned above. It seems like the Ultra is a step backward for a new drive, and this was a big surprise from SanDisk