This USB flash drive came in a fairly nondescript black box, with no branding on the box or the USB drive itself. I tested with a few different utilities, and it does appear to have 256GB storage. In addition, my speed tests show that it does come close to the 500MB/s read AND write speeds, as advertised. The flash drive itself has a little bit of heft to it. The cap for the USB-C side is not removable and has a swing mechanism design. The cap on the opposite side for USB-A is removable but is magnetic which makes for a satisfying connection. I used both connectors to connect to multiple PCs, Android phones and tablets, iPad Pro, and a MacBook Air with no issues.

I wanted to get this so I could easily connect my phone, pc, or mac to the thumb drive without worrying about needing a adapter. This has a ton of memory for me to store pictures, files, and videos on. It is also nice because I am able to connect my phone to this and transfer photos off of my phone to free up space. It is also a nice device to store videos so I can watch videos from this thumb drive rather than storing it on my phone. It will also work for thunderport on mac but you may need to format the drive in order to transfer to the mac. This is NOT a thunderport device so it will not utilize the full thunderport speed. If you are using it with your mac, it will transfer pretty quick to and from the device. This thumb drive is pretty decently built although the metal is a bit easy to scratch. There is no slot for key ring or lanyard which is a bit of a bummer. You are able to open the cover to use the type c port. The cap is connected to the thumb drive so it is hard to lose. The cap is pretty solid so it will not just pop off on its own. I do wish the USB port cover was the same. This is a pretty thick thumb drive so it may take up more than one slot. The price as well is pretty reasonable for a thumb drive of this size. The cap is nice because now there will not be any exposed plugs. The case is easy to get scratched up though. Overall this a good flash drive to have if you happen to need to empty your phone or even transferring data between devices via type c. Please note this is not a thunderbolt plug but it will work on a thunderbolt port. It has plenty of space so it can store a good amount of pictures. I do wish it had some kind of key ring slot as you can lose this drive.

The ylmrav 256GB Smartphone and PC OTG SSD USB Drive comes with both USB-C and USB-A interfaces. The unit has a metallic constructions, which makes it sturdy and also helps with heat dissipation. This ylmrav 256GB SSD USB Drive works with several platforms. I tested it on several devices with Android, MacOS, Chromium and Windows OS. Since it has dual interfaces, I did not have issues switching from devices to devices without the need of an adapter. The ylmrav 256GB SSD USB Drive reached the advertised speed of 550 MB/s read speed and 501 MB/S write speed on a synthetic benchmark. On Windows it reached 513 MB/s write speed and 554 MB/s read speed over USB 3.2. Even when it reached 98% capacity, it was still reaching 400 MB/s write speeds. The ylmrav 256GB SSD USB Drive performed very well when connected to fast interfaces. On a Macbook Pro it reached 486 MB/s read speed and 456 MB/s write speed. On Android devices it reached a max read speed of 440 MB/s and just only 215 MB/s write speed...because it was an USB 3.0 interface. The ylmrav 256GB SSD USB Drive is a fast USB even when almost full. It is a nice USB drive to have when you need to move files fast.

Im so glad someone made this device! My phone has so many pictures and videos on it. I wanted an easy way to save them and this is a very easy way to do so. If you have a case on your phone you may need to remove it. I plugged this into my Galaxy 10+ and it mounted with no issues. Transferred all my videos and pictures fairly quickly. Just make sure to unmount the device before removing it from your phone or your phone will freak out and want to be rebooted.

256G Smartphone and PC OTG SSD USB Drive, USB3.2 Type-C and USB-A Dual Connectors Solid State Flash Drive, 2 in 1 USB3.2 Flash Drive, Super High-Speed Type C USB Drive,ylmrav The flash drive comes attractively packaged in a gift-worthy box that is enclosed in shrink wrap. The only information on the outside other than the sticker identifying the product is a red sticker in the middle of a black field, noting that this is 256 GB. The drive itself is a metal cover on both ends, one with a magnetic closure, holding the cap on the USB3 connector, and the other is a levered fold-out cover on the USBC connector sideInsertinfing the drive into my laptop, windows recognized it immediately, and properties showed that there were 238 GB available and that it is natively formatted in the exFAT partition format. The decrease in available storage is normal with pretty much any storage drive because once its formatted, the formatting takes up a certain amount of space. I make a practice to reformat any flash drives that I use, just to make sure that the format structure is 100% and that there are no program fragments from any previous testing. Interestingly, enough, when I did the reformat, windows notes that this drive is natively an NTFS default structure, which Im going to format it to, and then format it back into exfat because that covers more types of storage systems. This drive should work well for my phone as well as a computer and will make transferring data between the devices easily done. Transferring some sample data from my laptop to the hard drive seems to move at a pretty fast rate, starting at about 300 megabits per second, which I think is pretty good. The metal cover is quite sturdy and gives it a good look. The magnetic cover on the USB3 side makes a secure ‘click’ when closing it, but there is no tether or place to keep the cap when the drive is in use, so you’ll need to take care not to lose or drop the magnetic cover [as I did, into shag carpet, making it a chore to find]. The levered cover on the USBC side folds out of the way for insertion and stays with the unit.

Incredible. 256 gb of storage on a duo usb & usb c drive. Love this little thing. Packs so much power. First test was transferred a 10gb file within 3 mins. Loveeee 10/10 highly recommend

The first thing I noticed when I took this drive out of its nice box, was that it was heavy! This is made out of metal; youre not going to break this on accident. Plugging it in, I saw that the drive already had Android system folders (empty folders) set up on the drive--this would make it easy for transferring/backing up files to the right places with the right names. As described, you can plug it into either a USB-A or C connection. Unfortunately, my phone case interfered with the USB-c connection and I had to remove it--but my case is quite thick. My disk properties showed 256G as expected. Im not caught up with the actual speeds (other reviews have commented on this) but it seemed to transfer quickly to and from the drive--it works for me. I would consider it a little pricey if it were just USB-c or USB-a, but its both--and its metal construction makes it a good deal.

Super easy to transfer data from your phone to your computer. I took tons of pictures on my Samsung phones and I am able to just send them over to this card then I just plug this card into my laptop and move all the photos over. This beats all the hassle of plugging your phone into your laptop.

The drive is small, easily pocketable and fits in the small pocket of jeans. The product photos shows text printed on the drive but the drive I received has none, its a nice clean silver finish thumb drive. There is no hole for attaching a lanyard. The cap for the USB Type A port attaches to the drive magnetically. The drive casing and cap is metal so should be fairly durable. The metal also helps to dissipate heat when the drive is in use, it gets hot but not burning. When plugged into a Windows 10 PC, the drive was auto detected and already formatted. The drive is able to reach the advertised speed when used with a Type C port. The Type A port was slower but not by too much.

This drive is as advertised. I tested it in Crystal Disk using the usb-c connector in a thunderbolt 3 port and got exactly 500 MB/s write and 547 MB/s read - so significantly faster than any typical usb flash drive, but obviously not up there with an external nvme drive which test at right about 1000 MB/s on the same thunderbolt 3 port.