Transcend 32GB JetFlash 790 USB 3.1 Flash Drive (TS32GJF790K),Black

I bought this thinking it was just another jump drive. Turns out that USB 3 series can interfere with wireless keyboard IF plugged into desktop next to wireless keyboard/mouse widget. Basically the mouse wont work and keyboard is sporadic. Something about wireless interference. I bought a dongle to plug this into and then plugged the dongle into back of desktop away from wireless widget. That seemed to solve the problem.

Long term durability and robustness remains to be seen, but it worked when I got it. Ive only transferred files over USB 2.0, havent tried the USB 3.0 speeds yet. Ive put around 60GB of photos and 1080p video footage, and if I recall, the transfer rate was around 10-15MB/s (80-100Mbps) - well under the maximum 480Mbps USB 2.0 spec, but it wasnt time critical, more for backup purposes so it wasnt a big deal. Being a solid state device, Im hoping for better long term robustness from this over an external HD. So far, so good even though its only been a couple weeks. On another note, I dont really care for the USB slider form factor, as it has a tendency to push back into the casing while youre trying to connect it to the USB port. Minor criticism and not enough to stop me from pouncing on it as one of the Daily Deals, but something I thought was worth noting.

I bought this Transcend Flash Drive on Amazon in 2015. I gave up on it for years, because I could not use it to store more than 32 GB of photo files. The label on it says 64 GB. I run Windows 10 Pro computers here. When I plug in the Flash Drive, select it in Windows File Explorer and right-click my mouse to see the drive properties, it says 32 GB. At the very least, this is misleading. At the very worst, it is false. The average user of a Flash drive should not have to resort to any formatting or change of file systems on the drive, in order to try and get 64 GB. It should perform as advertised, which I believe is a prime directive in product sales and advertising.

You know why these arent more popular? Because the casing is pretty cheap and they dont say sandisk or samsung on the side. You know why this is the best value drive on the market right now? because its FAST as heck at small file writes!!! put linux on one of these puppies and smile!!! even on usb2 speeds, these drives work great as OS drives... not much delay and waiting for things to happen, even browsing the web is fine. Run them on a USB3 port and you cant even tell youre running off usb. Linux boots and runs faster than old spindle drives. 13MB/sec at 4k!!! Definitely a sleeper in the dark. I cant find any other drive priced this low that even comes close to these speeds at small file sizes. If all you do is transfer videos and whatnot, sure get whatever drive you want. But if you want to run an OS off a USB drive, these models are by far the best value right now.

!!!BEWARE,THIS PRODUCT IS ACTUALLY 29.4GB,NOT 32GB!!! (at least from my personal experience) However,other than that and how annoying and seemingly flimsy way the plastic surrounding the USB is because of its very simple design. The way you open and close the 3.0 USB is by sliding along a slider embedded in the plastic,which feels weak at the time,but hey,I may grow to love it!

Update: Purchased a 2nd 64GB drive. Read speeds are ~4% better/faster, but write speeds are 20% worse/slower, compared to first 64GB drive purchased. Is that normal manufacturing variablity? I dont know, but am lowering my rating to 3.5 stars. Strangely or not, the new 64BG drive is formatted as exFat32, instead of old school FAT32 like the one I purchased a couple months ago. The only format options shown by Windows for this new 64GB drive are exFat32 or NTFS, although there are probably special programs that could format it as FAT32. Incorrect info (I reported to Amazon): These drive do NOT have an LED status light. I have 3 of them; no lights or LEDs whatsoever. Confirmed by official mfr website https://www.transcend-info.com/Products/No-610 ---Original review ~4 stars Purchased both a 32GB and a 64GB stick. Both are FAT32 format, which I have not changed. Actual storage size available is about 9% less than advertised (booo! but not unusual). No huge issues so far. Could definitely be faster (they are nowhere near theoretical max possible 3.0/3.1 speeds), but good enough for my purposes. Does not seem to get hot; just mildly warm after transferring a few files. For the price, I am mostly satisifed. TRANSFERRING LARGE FILES (movies): For the 32GB stick, copying (writing) a 611 MB movie (.mp4 format) from traditonal non-SSD hard drive to the stick took ~17 seconds. Transferring a larger 1.6 GB movie took ~45 seconds. TESTS: (see attached photo) I am no expert. I used free USB Flash Benchmark program, with the Transcend sticks in a powered USB 3.0 hub by Vantec ( https://www.amazon.com/gp/product/B07NX1NKXV/ ), and also plugged directly into 3.0 ports on back of a gaming PC (speeds were consistent with hub vs straight port). READ speeds for files 65 kB to 16 MB: 64 GB stick: ~ 120 MB/s 32 GB stick: ~ 140 MB/s (slightly better) WRITE speeds for files 64kB to 16 MB: 64 GB stick: ~ 29 to 65 MB/s 32 GB stick: ~ 29 to 80 MB/s (a wee bit better) Read & write speeds continue to drop with smaller files (below 64 KB size), which is usual for USB sticks. The 32 GB Transcend seems to perform up to 17% better than the 64 GB stick, at least for some larger file writes. Probably normal manufacturing/quality variance?

I purchased the 128gb version of this flash drive and so far i like it a lot. The speeds are quite acceptable. I moved a 70 gb photo file to it in no time. Fast access as well. I have limited amount of space on my laptop so I use this to keep things moving along without bogging down my macbook pro. When you plug it in there is a bright blue light and when you transfer data the blue blinks. USB extends with a flick of your thumb. Also I was able to format in several different styles easily. No problems whatsoever. Wish I had another one.

I back up and move a lot of material on flash drives and on external hard drives. I was disappointed to find that some drives simply died on me even though I was storing them in a cool, dark drawer. Suddenly they would read something like no disc and that was it. A few years ago you could run chkdsk and fix the problem but now this doesnt work because chkdsk reads no disc as well so you cant fix a single corrupted file that might be the only thing wrong. Fortunately I had off site storage so it didnt totally matter but it was still a hassle. Ive been using these about a year or so now after they were recommended by a friend. So far none of them has had the slightest problem. They also load and disengage very quickly. Im not deep enough into these things to give you any technical information but Im sure others have.

Like a number of USB drives I have purchased in the past and used on multiple computers it seems like half of them Windows does not recognize them as the size that they are. Windows would only format this thing to 4GB. But, when I use Etcher to burn ISOs to it Etcher always sees it as a 64GB drive with 63GB free for use and burns my iso images just fine.....until the drive died after being used around 20 times. Most of the time it sat in the drawer of my properly air conditioned and heated home, so a range of 68f to 75f and no other real reason for it to die to quickly. Never left it in the car and never ran around with it in my pocket getting physically stressed as I moved around. This thing never left the house but now....its dead and will be put in a drawer with a pile of others that seem to have a read/write life of two dozen cycles. God help us understand why SSDs seem to work so well but USB sticks are terrible as are many microSD cards....Kindle Fire, stop destroying those too.

Pretty fast, but a good example of why benchmarking software isnt much of a guide. Heres what Crystal Disk Mark has to say (and the photo shows a transfer of two video files on Windows 10, with an SSD source and this drive plugged into a fast USB 3.0 port that lives up to the 3.0 standard): Sequential Read (Q= 32,T= 1) : 102.911 MB/s Sequential Write (Q= 32,T= 1) : 97.646 MB/s Random Read 4KiB (Q= 32,T= 1) : 6.301 MB/s [ 1538.3 IOPS] Random Write 4KiB (Q= 32,T= 1) : 0.262 MB/s [ 64.0 IOPS] Sequential Read (T= 1) : 105.711 MB/s Sequential Write (T= 1) : 87.028 MB/s Random Read 4KiB (Q= 1,T= 1) : 5.113 MB/s [ 1248.3 IOPS] Random Write 4KiB (Q= 1,T= 1) : 0.231 MB/s [ 56.4 IOPS] Please see the photo of an actual transfer- it slows to about 23MB/sec after 150MB are transferred.