It's black and blue

Memory Express has had many sales on these Adata flash drives. I bought 10 of the 64GB when on sale, and 3 out of 10 were dead out of the box. 7 of the others were slower (to me) than USB2 flash drives, and 2 more flash drives died in the period of 2 months. Because of this, I have avoided ANY Adata products - they obviously make them as cheaply as possible and quality control seems completely absent. It is another classic example of poor quality flooding the markets from unscrupulous manufacturers. Unless you need a headache, a pain in your rear and the frustration of returning these for credit or refund, I highly recommend to avoid (at least the Adata flash drives) - As a 30 year network support manager, this is the worst I have seen in low quality and return rates for flash drives we NEED to rely on in our daily operations. Avoid

Don't buy - our experience is not the exception, it seems to be the norm

Good price when on sale, and decent capacity

Read speeds are never more than 40MByte/sec (which is pretty sad for a USB3 stick), and write speeds are a meager 12-20MB/sec. A lot slower than I would want for a USB3 stick.

Hold out for a USB3 memory stick with better read/write specs. There are many out there that will read at 80+MB/sec and write well above 30MB/sec. If you're going to buy a USB3 stick (verus a USB2), you may as well make sure you're getting the USB3 speed advantage for somethign this size...

Cheap when on sale.

Constantly disconnects from computers. Tried 2 different machines and 4 different ports (win 7/ Win 10, USB 2.1 and USB 3.0). After writing 6+ large files, 'device not ready'. Explorer shows NO files. Have to unplug/ replug to get files to show up. After 6th time I say JUNK. Not sure if files are intact so now only use as over priced MEMTest loader.

Unreliable connectivity.

Decent transfer speeds ~40MB/s vs my old USB 2.0 drive 14MB/s but nowhere as fast as my external USB 3.0 1TB HDD 75MB/s but given the form factor and price it is decent. Build quality is good. 128GB is plenty for all of my 3D models and school work. Transferring a 10GB from an SSD helps with the speed 4min vs 5.5min.

Drive not formatted out of the box although it only takes less than a minute to do that. Transfer speeds are about 2.5GB per minute. 1GB file transfers is very quick takes less than 25 seconds. Sustained speeds is low and the speed fluctuates a lot when transferring large files.

Usable transfer speeds and works as intended. I got it on sale, so I can't complain. Quality is good slightly better than my old SanDisk, the retracting mechanism has a good click to it. Speed fluctuates a lot when transferring large files.

good internal components Speed: Read: 120 MB/sec Write: 30 ~ 40 MB/sec (for small files 10 ~ 15 MB/sec)

Weak Plastic Case

Good for some transfer and use in USB compatible devices

Cheap.

File transfers ridiculously slow. Bought two. Formatted fresh out of package, which bricked one of the two. The remaining device has pathetic, irregular transfer speeds.

You get what you pay for.

high capacity decent build quality great speeds

a bit slow to register when plugged in

Works great, excellent write speeds for larger files. Has lasted me well over a year with no problems.

- High capacity - Fast USB 3.0 speeds - Portability

- Only weakness might be build quality (if you're really rough with it)

I'm not sure what to make of the bad reviews. Maybe they got lemons, or maybe I got lucky. I've had mine for over a year and I use it all the time. If you're looking for something portable and easy to transfer large files quickly, this little guy will definitely get the job done.

None

Bought the drive, formatted the drive, placed files on drive. The second time I used it it stopped working part way though. Returned for a new drive. This one after the format it stopped workng. Returned for refund.

Do not buy

None. It crapped out before I could even use it.

Looks and feels cheap with a cheap plastic housing.

I put it in my Windows 10 computer and formatted it as ExFAT. Put it in another computer and it failed to even detect. Tried it in 2 other computers, including the computer I formatted with, and it didn't detect in any of them. The drive totally cratered for no apparent reason and isn't even detected in the Disk Management utility, and therefore cannot even be low-level formatted. Returning it to the store the day after I bought it, but I'm hesitant to swap it for another.