20pcs 8GB USB Flash Drive 8G USB Drive USB 2.0 Flash Memory Stick Thumb Drive Black

I've bought these twice, a few months apart. Each time, I tested every one, by mounting them and writing a file, and they all worked.The first time there was no logo on the metal shield, and they were formatted with a MS partition table and one VFAT partition. They show up in lsusb on Linux as "058f:6387 Alcor Micro Corp. Flash Drive". I've used them for lots of things now, and have had zero problems.The second batch had the VICFuN logo on one side. They were formated without a partition table. The entire drive was one VFAT file system. They show up in lsusb as "abcd:1234 Unknown". That's the most generic usb id I've ever seen. I haven't used them for anything yet, but every one mounted and let me write a file.On both batches, the activity LED is hard to see. A friend has the white version of one of these, and the LED shows clearly through the plastic body. These dark blue ones don't pass the light nearly as well. You can still see the LED dimly in the circular groove where the metal shield turns.Overall, these are a good value.Update, 2018.2.17, I've bought a third 10-pack. They work just as well as the first two batches. They're kind of like a combination of the first two batches. They don't have a logo on the cover, but they do have a small VICFuN logo on the usb connector. There's nothing to show what capacity they are, but they show up as the correct size when mounted. They have a MS partition table, with one vfat formated partition. They have the "abcd:1234 Unknown" usb id.Update 2023.6.21: I bought 20 more, and tested them by writing a 3.5GB file, then checksumming it. All tested perfectly.

Sometimes I just want to share a few photos, documents, or a slideshow with family or friends who may not have access to the same secure servers or cloud services. USB2 means slow, so it takes a bit of time to secure-erase and reformat them to share with either Mac and PC users. They are not super speedy, but these sticks are sturdy, reliable, and affordable as giveaways. The metal strip provide some protection for the business end, but it also provides a nice surface for a marker-note or a small label. I think this style is sold for promotional printing. I am happy with the purchase and happy to have a few spare thumb-drives on hand.

As a reseller and repair center, our company has purchased hundreds of these flash drives. They are totally solid. Out of about 300 I know of only 2 fails. I recommend them.

These are great little thumb drives at a great price. I purchased the 8 GB units. The end caps can be totally removed. I worry the caps can be lost but then they provide 100% dust prevention. I got the red drives but will get the other colors possibly. The opposite end of the drives furthest from the USB connector has a loop tether. Also, that end contains a red LED that blinks when data is being transferred...remains constant when no data is transferred. I liked these so much I purchased a second set. The drives come enclosed in a nice cardboard box with a sectional divider. The case is metal (I checked it with a magnet). A bit of an update (090119): I was having a problem with intermittent recognition (mounting) of the drive using Windows 7. I use my laptop's front USB connector a lot for USB Drives. I then used a 6 inch extension USB cable and haven't had one problem since (40 for 40 burns). I do sometimes have a slow burn but that time I was also on the Internet. Looking forward to buying more of these drives. Hope this helps. Update (091819)...purchased another 30 units. Love these little drives.Update: October 30, 2019 Still love these great little USB Drives. I think I've purchased about 100 of these units in the past 12 months. I like the red-cased Drives. The internal LED is red and looks nice. I haven't purchased any other color...don't know if the case color is the same as the LED color. One new unit I received had a dead short. I took it apart by removing the clear cap...it is held in with a spot of silicone. I didn't discover any solder bridges but solder-wicked and removed the USB connector. Then I re-installed the USB connector. Short went away and the unit communicated okay. I power-up units for 24 hours now just as a test.

I like the price for these 32 GB drives because I have a lot of photos of family members to share with family members. Smaller drives are harder for me to handle. I was able to do a deep format on each drive and to copy a lot of photos to test how fast they would copy - it just took a couple of minutes. I was able to see the photos on every drive without a problem. I am happy with these drives, but found only one small problem! I pulled one of the drives out of the USB port, and the silver end disconnected from the blue USB insert end. I was able to put it back together easily! I will warn family members about the problem and I will order more of these drives as we have a large family and the price is right.

TLDR, at this time they appear to work as expected and I'm happy with them.I have purchased larger USB drives in the past and they end up being bad or cloned wrong size. So when I received these the first thing I did was a format, then copied 14.5gb of data to them and now I get to listen to a very unorganized random set of Pink Flyod (like 14 alubms that I converted) in my car. Speed seems fine.Overall the design is okay. They look like several of the knock off's/cheap ones (since they all user similar cases) but these are operating just fine.My only complaint is they just like the old smaller ones that didn't perform well. I should have bought a differnet color as I have several of those on my desk as well. These are primarily used for install OS's on to computers and for testing of data. Sadly, my stack of 4GB aren't big enough anymore (for which I have like 30 of them).Bang for buck, so far yes.