MOSDART 64GB USB Flash Drive 5 Pack, 64 GB Multicolor Multipack USB2.0 Thumb Drives, Swivel Design with LED Light, exFAT Jump Drive Memory Stick for Computers, Data Storage

I received these USBs and used them for various purposes. One as a general file backup, one as a Windows recovery drive and one as a Linux bootable drive. These worked great on all three tasks; I had no issues with large copies of files and the USBs arrived with read/write access. Tested the other two (I bought five) and no issues there. I definitely recommend this product.

Ive them

So I just received these. Ive seen more than a few reviews saying that some of them arrive DOA. I tested all five and they are functioning as expected. For a quick test, I copied a 125mb file to each of them without an issue. It seems theres a bit of a speed discrepancy between the items. It took 15, 18, 20, 21 and 24 seconds to copy the file to each of them. I retested the slowest of the bunch (the red one in case your wondering :) ) and got the same result. So that works out to an average of 6.4MB/second. For $3.40 each, I cant complain. If I have any durability issues Ill amend this review.

Served the purpose. Multiple colors allows for distinguishing separate files and libraries. Would purchase again! I hope this company will offer larger capacity flash drives in the future. The write speed is not super fast but the read speed is comparable to other flash drives. The swivel design makes them easy to insert and remove and provides extra protection to the USB connector.

Like the looks of the product and simple to use

I use a lot of thumb drives for various reasons. These are a great deal for the money, and they hold up well to vigorous use as well!

I bought two 5 packs, one of the 32GB size and the other of the 64GB size. The drives perform similarly, though the 64GB version is on average, faster when writing. 32GB Version I tested all 5 drives in the 5-pack and all functioned well. I measured write speeds and found they sustained a write speed of about 5MB/s. Surprisingly, the rate was very consistent (see 1st photo). 64GB Version I tested all 5 drives in the 5-pack and all functioned well. I measured write speeds and found they average a write speed of about 8MB/s, however the write speed was extremely bursty, cycling between 15MB/s and 0MB/s (see last photo). Both Versions The drive did not get warm with continuous writing. The reason I down-ranked it 1 star (and gave it only 3 stars for usability) is because with the Blue (see picture) and Black thumbdrives you cant see the activity LED unless you peer directly into the small hole on the end of the drive. With the Green thumbdrive you can see a faint red flashing through the case. The White (see picture) and Red thumbdrives have a very visible flashing and glowing red light that illuminates almost the whole drive. I would recommend getting the white or red versions of these drives if seeing the activity LED is important to you.

Not useable for my purposes. 2 have failed after format, 2 more can not berecognized after a large data load. Would have returned but waited too long

First of all, let me say that I very much appreciate having the indicator led to let me know that the computer can see the device and, the device is actually doing something when commanded. I was able to copy a 200+Mb file to each device so they all appear to be working electrically. The reason for only 4-stars was that Windows indicated device does not have the required performance characteristics...to use for Ready Boost. Anyways, I should be able to use the drives to transport files, portable tools and such...better than a thumb drive without an indicator led. If they last a few years, Ill be a happy camper.

Purchased to distribute a video to family members. 4 of the 5 worked fine, 1 does not read at all. The computer doesnt even see its connected. Still a good price for 4 though :)