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SanDisk

SanDisk 256GB Ultra Dual Drive m3.0 for Android Devices and Computers - microUSB, USB 3.0 - SDDD3-256G-G46

    • Based on 28,145 reviews
Condition: New
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Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon
Arrives Mar 3 – Mar 4
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Size: 256GB


Features

  • Free up space on your Android Phone (Requires device with micro-USB port and On-The-Go (OTG) support. See official SanDisk website for list of compatible devices.)
  • Back up photos, videos, and contacts. Compatibility-Windows 7, Windows 8, Windows 10, Mac OS X v10.9+ and higher
  • Retractable design with dual microUSB and USB 3.0 connectors
  • High-speed USB 3.0 performance with up to 150MB/s file transfer from drive to computer (Write speeds lower and varies by capacity. Micro-USB port with USB 3.2 Gen 1 / USB 3.0 support required. Based on internal testing; performance may be lower depending upon host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.)
  • SanDisk Memory Zone application (available on Google Play) lets you easily manage your photos and videos (Download and installation required. Set up automatic backup within app settings. See SanDisk Memory Zone website for details.)

Description

The SanDisk Ultra Dual Drive m3.0 makes it easy to free up space on your OTG- enabled Android smartphone and tablet(1). With a micro-USB connector on one end and a USB 3.0 connector on the other, the drive lets you move content easily between all your devices—from your Android smartphone or tablet to your laptop, PC or Mac computer(1). The high-performance USB 3.0 connector is backward-compatible with USB 2.0 ports and, with speeds of up to 150MB/s, it allows you transfer a full-length movie to the drive faster than with a standard USB 2.0 drive(3). This flash drive for your Android devices includes the SanDisk Memory Zone app for automatic camera roll backup and easy file and media management(2). | (32GB-256GB) Read speeds from drive to computer up to 150MB/s. (16GB only) Read speeds from drive to computer up to 130MB/s. Write speeds lower and vary by drive capacity. USB 3.0 port required. Based on internal testing; performance may be lower depending upon host device. 1MB=1,000,000 bytes. | 1GB=1,000,000,000 bytes. Actual user storage less. | (1) Requires device with On-The-Go (OTG) support. | (2) Download and installation required. | (3) Based on a 1.2GB MPEG-4 video transfer with USB 3.0 host device. Results may vary based on host device, file attributes and other factors.


RAM: ‎256 GB


Memory Speed: ‎150 MB


Brand: ‎SanDisk


Item model number: ‎SDDD3-256G-G46


Hardware Platform: ‎PC, Mac


Item Weight: ‎0.16 ounces


Product Dimensions: ‎1.19 x 1 x 0.46 inches


Item Dimensions LxWxH: ‎1.19 x 1 x 0.46 inches


Color: ‎Black


Batteries: ‎1 Unknown batteries required.


Manufacturer: ‎Western Digital Technologies Inc.


Country of Origin: ‎China


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎April 30, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Mar 3 – Mar 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Read the fine print, **130MB/s READ speeds, write speeds are lower
Size: 128GB
Review Image by Oscar Perez
Review Image by Oscar Perez
If you noticed the picture of the packaging, there are two asterisks aka a catch. On the back of the packaging it reads: **Reads speeds from drive to computer up to 150MB/s. Write speeds lower and varies by capacity. USB 3.0 port required. Based on internal testing; performance may be lower depending upon host device. This isn't an issue for me as one cannot expect every device to perform as advertised. There will always be a limiting variable preventing you from ever reaching max advertised speeds. People need to understand this. Your old Galaxy S3 micro USB port (for example) will not push this drive to its limit. Onto the write/read speed test using H2testw. Using this drive on a USB 3.0 port and H2testw I was able to reach a peak of ~55MB/s write speeds at the start of the test. However that didn't last long and the drive steadily slowed down to 27.9MB/s 10min into the write test. At 1 hour, 25.7MB/s. When verifying the written data the drive peaked at 141MB/s. By the end of the test the drive stabilised at 103MB/s. I believe the drops are caused by thermal throttling of the drive, as it did it hot to the touch during testing. Please note, this isn't real world performance. H2testw is writing very large files, one at a time. Transferring photos will not reach these speeds as they are small files, the transfer speed will peak then drop back to zero before peaking at the next file. Transferring videos is similar to the test, as they are large files where the drive can ramp up to it's max possible speed. Again, depending on the host device and many other variables. H2testw is a free Windows utility that verifies the true capacity of the drive by writing "dummy files"; writing until the drive is full or "full". Then the utility reads them to verify the files, ideally the verify will complete without error. If it ends with an error it will show at what amount it ended. For example, if it ended at around 16GB but you purchased a 128GB; this simply means you received a counterfeit drive and should return the drive. If the test ended on an obscure number, the drive is faulty and needs replacing. The drive I received passed with a final capacity of ~117GB for the 128GB model. This is normal as some space is taken up by the MBR, the "library" of the drive where all your files locations are kept. This is how the host device knows what goes where, what is empty and what is not. There are two files already on the drive, a PDF manual and a APK file of SanDisks app for Android. I don't know why they bother including the APK as Android users would have to enable "Install from unknown sources" in their device settings. Just search for the app in the Play Store if enabling this makes your weary, although you can simply disable it right after you install the APK. But again, there's no point in the first place as the included app is probably outdated and will be updated by the Play Store soon after. ... show more
Reviewed in the United States 🇺🇸 on June 12, 2022 by Oscar Perez
    • Good!
Size: 256GB
Works for me!
Reviewed in the United States 🇺🇸 on November 18, 2022 by Eron
    • Well
Size: 64GB
I wanted a USB device to give the girl at the local grocery some books. 16G would have been more than enough. This was $8. And it's a SanDisk. Hope she makes good use of the other 63 1/2 gigs.
Reviewed in the United States 🇺🇸 on September 24, 2022 by Steampunk
    • Exactly as Pictured
Size: 128GB
Had a 32 Gb of the same type very easy I got 114 of the 128 gb but that’s fine with me
Reviewed in the United States 🇺🇸 on September 29, 2022 by Matthew
    • Works well. Really compact.
Size: 128GB
Works well. Easy to use. Very compact.
Reviewed in the United States 🇺🇸 on October 9, 2022 by Robert Burns
    • Extremely convenient!
Size: 256GB
Extremely convenient for those whose devices are having the micro USB port! - I use it very frequently.
Reviewed in the United States 🇺🇸 on September 27, 2022 by Artak Hambarian
    • Makes photo backups to Android devices possible
Size: 128GB
I bought this little drive after several other attempts at backing up my photos using an Android tablet for a trip I was taking. The tablet didn't have a lot of storage space or memory, so I wanted to back up the pictures to somewhere else. One can also drop, lose or have one's camera stolen while on a trip too. I was unable to get the tablet to recognize several different flash drives I purchased. Then I bought a portable hard drive that also wasn't acknowledged. Then I read about this little SanDisk device. After downloading the SanDisk Memory Zone app onto the tablet, the SanDisk flash drive was immediately recognized and opens up a system where your entire tablet contents can be transferred around inside the tablet, or to the SanDisk flash drive itself. It made copying or moving files pretty easy. It hung up on several occasions but I am blaming that on my primitive tablet and the huge amount of material I was attempting to move all in one large file. I also had problems with losing some image files after downloading them from my camera, but I am also blaming it on the tablet which had little memory or hard drive space. After searching amongst all my backed up files, I found them on the SanDisk flash drive. I like the fact I can have a backup hundreds of gigabytes of photos on a a teeny tiny flash drive that doesn't take up a lot of space. I didn't need to carry a backup hard drive with me on my trip either. I can now move some of the photos I want to share straight to my cellphone or laptop. I wish the program inside the SanDisk flash and Memory Zone app worked on my desktop because it makes moving large files faster and easier. Perhaps they could develop something like that in the future. Warning: I had to attach the SanDisk drive to a lanyard to keep from losing it it was so tiny. Perhaps other users might be less likely to lose things as I am, but it would be very easy to lose this out of one's pocket or purse without something to keep it grounded. The way the two different connectors slide could have been easier to operate, but having both a standard USB and micro-USB/OTG connector built into it was worth the inconvenience. ... show more
Reviewed in the United States 🇺🇸 on November 8, 2018 by AmyWalker

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