SanDisk 256GB Ultra Dual Drive Luxe USB Type-C - SDDDC4-256G-G46

Excellent usb drive. Very fast read/write speeds. Almost ssd level. And construction is high quality metal. Would recommend fully. Although it tends to run hot, like all metal usb flash drives.

Fast and it will get Hot. Used for some big file transfers. Still going strong. The heat can be concerning but at the same you know it's dissipating it effectively based on the material.

This 3.1 USB Flash Drive Is Small, Smaller the Size Of a Pair Of Fingernail Clippers. But, Don't Let the Size Fool You. It Will Hold Every Bit of 1 Tb. And The End Flips Over Give You Both a USB Type-A Connector and a USB Type-C Connector, (Which Will Fit The Modern Androids and Apple Products). So That I Don't Have To UpLoad To My DeskTop Computer Then DownLoad To My Tablet. I Can Connect Straight To The Tablet. I DownLoaded Lots Of Video Files All Over 1 Gb Each and That's a Little Dicey. It Depends On the Memory in Your Computer DeskTop, But I Would Recommend Just DownLoading a Few Files At a Time or a Few Folders At A Time. Do It Quickly One After Another and Windows 10 Will Put These Files To Be Copied In The Copying Que, Then Select the Two Vertical Bars In The Copying Display To Pause Each Copy and Stack Them Up And When One Folder Has Been Copied Then Click On The Arrow For The Next Set In The Que. You Normally Only Have To Do This Once Then Just Update Any File or Folders One At A Time. If You Put Too Much Strain On the BandWidth, It Might Come Back and Tell You Errors Were Found and Ask You To Scan & Repair The Flash Drive, (an Easy Thing To Do). But, Chances Are That If You Just Let It Copy Files While You Are Not Using The Computer It Will DownLoad about 35mb to 65mb Per Second and Be Done, Just A Little At A Time. So, Far, I Highly Recommend This Flash Drive and It's Not Too Bulky to Carry in my Pants Pocket. I Have Mot Experience Any Heat Problem as Others Mentioned. It Get A Little Warm, but No Warmer than My Other SanDisk Flash Drives. I Like The Brand, (Always Quality Products), and I Would Say That This A Genuine SanDisk Product.

I bought a "Used - Like New" version of the 512GB 400MB/s model during the Prime Day sale, for use as a portable backup of important data that I could take with me on my keychain. It was the perfect size and design for this use and also kind of cute. When I received it a few days later, it was just the drive, wrapped in bubble wrap in a plastic bag. No packaging, despite the description for "Used - Like New". But I decide to give it a shot anyway, as I didn't really need the packaging, and if the drive was good, that's what really mattered. But it wasn't. It SO wasn't. Easily the worst flash drive, and one of the worst tech products, I've ever used. After I formatted it using ExFAT, then encrypting it using VeraCrypt, which I've done with every flash drive I've owned that I used to carry important files with me on my keychain, it took me literally days to copy over around 400GB of data. It often basically froze, and made my reasonably powerful PC grind to a halt, and I had to stop, wait and restart the copy process, over several days, to complete it. Then, once all the data had been copied over, syncing files from my PC to it took much, much longer than it should have. The drive was clearly junk and going back, both because the description was misleading, and because it was essentially defective. But the Prime Day sale was still going on so I decided to give it another shot, and ordered another "Used - Like New" version. When I got it several days later, it came with the original packaging, opened of course. But the drive was unformatted, and seemingly unused. So I formatted and encrypted it, as before, and proceeded to copy over the same data as before. Only now, instead of days, it took just a couple of hours, if that. I mean it was fairly fast. Not blazing fast, averaging around 50MB/s, which was quite decent for a drive this relatively inexpensive, but fast enough for my needs. The way I intend to use it, to sync my PC data to it before leaving home each day, which is usually no more than several MB of new or changed data, it's plenty fast, and every time I sync it, it only takes a few seconds. So it's hit or miss with this drive. The difference, I found, is that in the hardware settings, the first drive didn't allow me to enable write caching, while the second one did. So either there are at least two different chipsets that come with this drive, or the first one's chipset was defective. So if you do get this drive, check for this, and if it doesn't allow write caching, then send it back, it's likely going to be ridiculously slow. But if it allows it, then keep it, you should be happy with it so long as you don't expect super fast write speeds. Update: Around a week in it's actually performing even better, with daily syncs taking from a few seconds to a minute or two, depending on how much data is being synced. I mainly use it to backup and sync my PC's most important data so I can always have a backup with me on my keychain (I have other backups of course and this is just additional insurance), and it's worked perfectly for this. I actually created 2 partitions on it. One that took up most of the drive, formatted in NTFS (which gave me around 10GB more capacity than when formatted in ExFAT) then encrypted in case I lose it, to store the backup. And one 8GB partition, formatted as ExFAT and unencrypted, to pop into my phone to backup data when I'm out all day. Works great for both. Update #2: I liked the 512GB drive so much that I ended up getting the 1TB version, as the 512GB one didn't have a lot of capacity left for future needs after I copied my most important data to it. I also expanded the smaller unencrypted partition to 64GB as I could easily spare the space with this much capacity. I then copied some additional data to the larger encrypted partition. I actually purchased several 1TB drives, fearing that I'd have the same issues I had with the first 512GB drive And, just as before, several turned out to be extremely and ridiculously slow, and they didn't support write caching, while thankfully one did support write caching and was much, much faster, as fast as the good 512GB drive. So I returned the slow ones and kept the fast one. It's not blazing fast, around 280/70MB/s read/write, but that's more than fast enough for my needs, and I much prefer its design and size over faster but bulkier drives. So bottom line, a pretty nice and reasonably fast drive, IF you get the one that allows write caching, but an absolutely and horrifically terrible drive if you get the one that doesn't. Another way to tell which is which is that the good 512GB version has only 460GB capacity and the good 1TB version has only 920GB, while the bad 512GB version has 466GB and the 1TB version has 931GB. Also, the good ones were made in Malaysia and the bad ones in Taiwan (the country is printed on the drive).

I got the 400MB/s. This is my second one. It's full metal so it feels really nice. It is super small so it's very pocket friendly. It is really fast, really holds up to the 400MB/s advertised speed. In fact, it's so small and so fast, I gotta put a leash on it so it doesn't run away. But since it's small and fast, it gets hot. Not skin burning, but still really hot. I was worried so I put a fan in front of it, and it certainly cools down. Overall I'm happy with it.

Excellent product original fast and efficient but delivery is one day late charging extra riyal and cannot delivered on same day is dissappointing...

Pendrive rápido, bom e bonito! Design top, pequenininho, nem parece que tem toda essa capacidade, mas tem! É todo em metal, o que dá ainda mais firmeza na durabilidade! Foi o melhor pendrive que já tive, sem dúvidas!

Muy buena memoria USB, es toda de metal y es muy rapida, yo la uso en mi Macbook Air y funciona muy bien el conector USB C, tambien la conecte en mi iPad y la reconocio sin problemas y tambien la conecte a una PC usando el conector USB A Excelente opcion !!

Utmärkt !

Good rough and tough product