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  • Your Rescue Plan documents will be delivered to you via email only to the address associated with your Amazon.com account and can be found in your account message center within the Buyer/Seller Messages.
  • If your device stops working, the Rescue data recovery plan will recover the data from the failed device and return it to you on a new piece of external storage media.
  • Covers new removeable flash memory device of any brand when purchased within 30 days (receipt must be retained for purchases not on the same transaction).
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  • If your drive stops working, the Rescue data recovery plan will attempt to recover the data from the failed drive and recovered data will be returned on a media storage device or via secure cloud-based data storage.
  • Covers new removeable flash memory device of any brand when purchased within 30 days (receipt must be retained for purchases not on the same transaction).
  • Free shipping for in–lab data recovery; 24/7 online case status tracking
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SanDisk 256GB Ultra Dual Drive Go USB Type-C Flash Drive, Black - SDDDC3-256G-GAM46​

4.4 out of 5 stars 32,292 ratings

$23.77
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Color: Black
Size: 256GB
Style: Up to 400 MB/s
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Purchase options and add-ons

Brand SanDisk
Memory Storage Capacity 256 GB
Hardware Interface USB Type C
Special Feature Fast Data Transfer
Compatible Devices Smartphones, Tablets, Laptops, Desktops

About this item

  • The 2-in-1 flash drive with a reversible USB Type-C and a traditional Type-A connector.
  • Seamlessly move content between your USB Type-C smartphone, tablets, and Mac and USB Type-A computers. (Mobile device requires USB Type-C port and On-The-Go (OTG) support. See SanDisk website for list of compatible devices.)
  • Free up space on your USB Type-C smartphone so you can take more photos (Mobile device requires USB Type-C port and On-The-Go (OTG) support. See SanDisk website for list of compatible devices.)
  • Automatically back up photos with SanDisk Memory Zone app (Download and installation of SanDisk Memory Zone app required.)
  • High-performance USB 3.2 Gen 1 drive with up to 400MB/s ultra-fast read speeds (1 MB/s = 1 million bytes per second. Based on internal testing; performance may vary depending upon host device, usage conditions, drive capacity, and other factors. USB Type-C port with USB 3.2 Gen 1 support required.)
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SanDisk 256GB Ultra Dual Drive Go USB Type-C Flash Drive, Black - SDDDC3-256G-GAM46​
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Price$23.77-19% $21.99
List:$26.99
$21.30$25.16-23% $25.48
List:$32.99
$22.89
Delivery
Get it as soon as Tuesday, May 6
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Customer Ratings
Sold By
memory capacity
write speed
read speed

From the manufacturer

M01
M02

2-in-1 flash drive for your USB Type-C and Type-A devices

Shoot photos on your USB Type-C smartphone and need those on your PC? We got you. The SanDisk Ultra Dual Drive Go lets you seamlessly move files between your USB Type-C smartphone, tablets, and Mac and USB Type-A computers.(2)

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.
M04

Free up space to take more photos and videos

Out of space on your USB Type-C smartphone? Simply plug in the SanDisk Ultra Dual Drive Go USB Flash Drive and easily move files off your device, freeing up valuable space.(2) With all that extra space you can do more travel photos, movies, music, games and whatever else you want.

M0501

Automatic backup

Automatically back up your latest photos, videos, music, documents and contacts with the SanDisk Memory Zone app.(3)

M0504

Quickly move files

High-end USB 3.2 Gen 1 performance with up to 400MB/s read speeds let you quickly move your files from your phone to your computer.(1)[128GB-1TB]

M0503

Swivel design

Toss it in your bag or pocket. The drive’s swivel design is built to help protect the drives’ connectors when you are on the move.

M05_4

Go with the keyring hole

Attach your drive to your keyring to keep it convenient and secure. Now you’ll always have it handy if you need to free up space when you’re out.

Compare Our Products

    • Capacity

      Available in up to 1TB(4)

    • Capacity

      Available in up to 1TB(4)

    • Capacity

      Available in up to 256GB(4)

    • Connector Type

      USB Type-C and USB Type-A

    • Connector Type

      USB Type-C and USB Type-A

    • Connector Type

      USB Type-C and USB Type-A

    • Speed

      Up to 400MB/s(1)[128GB-1TB]

    • Speed

      Up 400MB/s(1)[64GB-1TB]

    • Speed

      Up to 150MB/s(1)[32GB-256GB]

    • Design

      All-metal swivel

    • Design

      Swivel

    • Design

      Swivel

    • Keyring Hole

      Yes

    • Keyring Hole

      Yes

    • Keyring Hole

      No

Legal Disclaimers

Product specifications subject to change without notice. Pictures shown may vary from actual products.

(1) Based on read speed. 1 MB/s = 1 million bytes per second. Based on internal testing; performance may vary depending upon host device, usage conditions, drive capacity, and other factors. USB Type-C port with USB 3.2 Gen 1 support required.

(2) Mobile device requires USB Type-C port and On-The-Go (OTG) support. See official SanDisk website for list of compatible devices.

(3) Download and installation required. Set up automatic backup within app settings. See official SanDisk website for Memory Zone details.

(4) 1GB=1,000,000,000 bytes. 1TB=1,000,000,000,000. Actual user storage less.

Western Digital, the Western Digital design, the Western Digital logo, SanDisk, the SanDisk logo, Memory Zone, and SanDisk Ultra are registered marks or marks of Western Digital Corporation or its affiliates in the US and/or other countries. Mac is a mark of Apple Inc. USB Type-C is a mark of USB Implementers Forum. All other marks are the property of their respective owners.

2023 Western Digital Corporation or its affiliates. All rights reserved.

Western Digital Technologies, Inc. is the seller of record and licensee in the Americas of SanDisk products.

Product information

Technical Details

Collapse all
Write Speed ‎4E+2 megabytes_per_second
Read Speed ‎400 Megabytes Per Second
Connectivity Technology ‎USB
Color ‎Black
Model Name ‎SDDDC2-256G-A46
Flash Memory Type ‎USB
Manufacturer ‎Wetsern Digital Technologies, Inc.
Hardware Connectivity Technology ‎USB Type C, USB Type A
UPC ‎619659198152
Item model number ‎SDDDC3-256G-GAM46​
Operating System ‎Mac OS 9, Windows 7, Windows 10
Item Weight ‎0.16 ounces
Product Dimensions ‎1.75 x 0.48 x 0.34 inches
Item Dimensions LxWxH ‎1.75 x 0.48 x 0.34 inches
ASIN ‎B0CKJ8YDRK
Date First Available ‎October 18, 2023

Additional Information

Customer Reviews
4.4 out of 5 stars 32,292 ratings

4.4 out of 5 stars
Best Sellers Rank #60 in USB Flash Drives

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Product Warranty: For warranty information about this product, please click here

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SanDisk 256GB Ultra Dual Drive Go USB Type-C Flash Drive, Black - SDDDC3-256G-GAM46​


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Product Description

Looking for storage that works across your USB Type-C and Type-A devices? The SanDisk Ultra Dual Drive Go is the 2-in-1 flash drive that lets you easily move files between your USB Type-C smartphone, tablets, and Mac and USB Type-A computers. Now you can take even more photos and access them across your devices. (Mobile device requires USB Type-C port and On-The-Go (OTG) support. See SanDisk website for list of compatible devices.)

Customer reviews

4.4 out of 5 stars
32,292 global ratings

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Customers say

Customers find the flash drive works well, particularly on Apple Mac devices, and appreciate its dual USB-A and USB-C connectivity, ample storage space, and ability to transfer pictures and files easily. The size receives mixed feedback, with customers noting it fits in a pocket but is physically small. The plastic construction is criticized for being cheap, and ease of use opinions are divided between those who find it super easy to use and those who consider it unusable. The write speed is also mixed, with some reporting great performance while others find it super slow.

AI-generated from the text of customer reviews

548 customers mention "Functionality"427 positive121 negative

Customers report that the flash drive works well with Apple Mac computers and functions properly right out of the box.

"...using this drive to replace two 256GB drives it impressed me as a good flash drive with relatively fast write speeds. (~30Mbps)...." Read more

"...It feels a bit flimsy but works fine. I wish it was both C and USB but it is what it is. I have no complaints. It works as it should...." Read more

"...It's an excellent investment for anyone needing reliable, cross-device storage." Read more

"...It has some major changes to the operating system and I decided to start fresh with the tedious task of reinstalling everything...." Read more

216 customers mention "Storage capacity"167 positive49 negative

Customers appreciate the flash drive's storage capacity, noting it has a lot of space in a small form factor and can back up up to 70GB of data from their phones, helping to free up space on both phones and computers.

"...The 512GB capacity provides plenty of space for photos, videos, and large files, and the USB 3.1 speeds are fast, allowing for quick transfers..." Read more

"Super fast -- Large capacity -- Works on phone, tablet, and computers nicely. the Dual interface is great. Backup SW for phone is nice add on...." Read more

"...one or the other and it’s very convenient to use this drive; it holds a lot and will plug-and-play in older and newer machines...." Read more

"...That's 46 gb of unaccounted for space. That's alot of missing storage space. My 256 gb storage drives are actually 232gb, 24gb missing...." Read more

214 customers mention "Usb connectivity"175 positive39 negative

Customers appreciate the dual USB connectivity of the flash drive, which includes both USB-A and USB-C ports.

"...The dual functionality makes it ideal for people working across different platforms, from PCs to smartphones...." Read more

"...the Dual interface is great. Backup SW for phone is nice add on...." Read more

"...This 512 GB flash drive is tiny and quite useful because it has both USB-A and USB-C connectors...." Read more

"...first thing that caught my attention was that it has the now standard USB-C connector as well as the universal USB-A connector...." Read more

153 customers mention "Transfer speed"119 positive34 negative

Customers appreciate the flash drive's transfer speed, finding it great for moving pictures and files between devices, particularly between tablets and laptops.

"...With both USB Type-C and USB Type-A connectors, it's super easy to transfer files between my phone, tablet, and laptop, regardless of the port type...." Read more

"...I am able to easily transfer and work with (print, edit) files on this flash drive no matter which system I am using...." Read more

"Even bigger data moves. Sneakernet has never been so great. Plug it in and let it do it's magic. Huma, Cheryl and Debbie in our offices love them...." Read more

"...BOTTOM LINE: Good for light use and a quick way to move files between phones or between PC and phone. Buy a spare" Read more

356 customers mention "Write speed"177 positive179 negative

Customers have mixed experiences with the flash drive's write speed, with some reporting great performance and quick data transfers, while others find it super slow and note that reading files takes a while.

"...two 256GB drives it impressed me as a good flash drive with relatively fast write speeds. (~30Mbps). Form factor is also good." Read more

"...The most prominent characteristic of usage is that it’s the slowest flash drive I’ve ever owned (going back about 15 years), regardless of capacity..." Read more

"...plenty of space for photos, videos, and large files, and the USB 3.1 speeds are fast, allowing for quick transfers without any lag...." Read more

"...The problem is that it is very slow when writing files even though it says it can write up to 400 MB per second." Read more

267 customers mention "Size"179 positive88 negative

Customers have mixed opinions about the flash drive's size, with some appreciating its small form factor while others find it too compact.

"This was tiny! I have other 512 Gb USB and this is so tiny. It feels a bit flimsy but works fine...." Read more

"...The slim, swivel design is compact and protects the connectors when not in use, which makes it super convenient to toss in a bag or even your pocket..." Read more

"...The physical drive itself is tiny. And the casing is plastic (not metal)...." Read more

"...The entire device itself is quite small and portable, so it fits in any pocket, pouch, or on any keychain without taking up a lot of space...." Read more

183 customers mention "Ease of use"124 positive59 negative

Customers have mixed experiences with the flash drive's ease of use, with some finding it super easy to use and convenient, while others report it being pretty much unusable and user unfriendly.

"...been using it for a short while (three weeks), it has always been available and reliable, with no hiccups or complaints from either Windows or macOS..." Read more

"...Field expedient paragraph marking data strips are so easy." Read more

"Very difficult to use. I am keeping it though." Read more

"...laptops and desktops that have one or the other and it’s very convenient to use this drive; it holds a lot and will plug-and-play in older and newer..." Read more

234 customers mention "Plastic quality"54 positive180 negative

Customers criticize the flash drive's construction, noting it is made entirely of cheap plastic with a flimsy USB-A connector.

"This was tiny! I have other 512 Gb USB and this is so tiny. It feels a bit flimsy but works fine...." Read more

"...CONS: The case is thin plastic and is alarmingly flexible. It seats firmly in the USB port of my PC, but must be removed very gently...." Read more

"...one hand, if judged simply as a thumb drive this one is okay – slightly overpriced and slightly cheesy construction...." Read more

"...Ultra Dual Drive Go 512GB is a perfect solution for anyone needing reliable and portable storage across different devices...." Read more

Not what I expected
3 out of 5 stars
Not what I expected
It’s that time of year again when the new iphone is introduced and like a lemming I placed my order withing seconds and now I just got one of the first batch, the new pro max model. While I admire the convenience of just saying yes a few times and having the new phone replicate everything in my old one, which is being traded in, this year is a little different. It has some major changes to the operating system and I decided to start fresh with the tedious task of reinstalling everything. That task can have its dangers though and I’ve spent all morning trying to do a backup to my Macbook and it didn’t go well. So backing up to an external drive seemed even safer, if it worked as I hoped. WHY SANDISK As soon as I started shopping my eyes started to glaze over, there were pages and pages of thumb drives and for some inexplicable reason most of them still had lightning connectors, which means I would have to use a chancy adapter. I don’t get it, we are at least a couple of generations removed from that now obsolete connector and companies are still selling drives at full price. Then I saw this one from SanDisk and I thought my search was over. This is a brand I have trusted for years and the first thing that caught my attention was that it has the now standard USB-C connector as well as the universal USB-A connector. As my cloud backup is only 8GB I chose one of the smallest sizes I could get, based primarily on the fact that I could get it the same day so I can do my back and start using my new phone. DOES IT WORK This question has to be either yes or no, it either does the job or it doesn’t. So as soon as it arrived I plugged it in. There’s no need to get into techie specs with something like this, in today’s world there rarely is such a thing as slow. Another thing we expect in today’s world is for something to do the job it was purchased for. On one hand, if judged simply as a thumb drive this one is okay – slightly overpriced and slightly cheesy construction. On the other hand they heavily promote this as a simple plug-in backup device for smartphones. What they don’t make clear is they don’t mean all smartphones. This is clearly intended more for the Android crowd and that’s the biggest strike against it – if plugged in to a current iphone it does absolutely nothing (in terms of self-running a useful backup app). In the tiniest font possible on the back of the hanger card they tell you, after you’ve already bought the product and brought it home, that it may not be compatible will all devices and they give you a website. Unfortunately that link is broken. By now it is clear that this is not what I expected. So I searched their website, which is actually Western Digital’s website, and deeply buried in there (it took about 10 minutes to unearth it) behind a lot of conflicting information I finally learned that to use with an iphone I have to manually locate the Files folder and drag those to the SanDisk … but not all files are located there, it takes a separate task to locate and save photographs, that still leaves some files that I would like backed up. In their FAQ tools they seem to make it clear that this really isn’t a backup drive for an iPhone after all. It sounded too good to be true. YES NO MAYBE I’m splitting my opinion two ways on this. On one hand it is a decent generic flash drive from a company with a good reputation. On the other hand it is basically useless as a plug and play solution to easily backup my Apple phone. Additionally I would like to see a bit more rugged enclosure. The plastic reminds me of the cheap flash drives they give away for free at carnivals and trade shows and does not give me confidence that my data is protected against physical damage. The balance of all that results in a score of three for average, not bad for some uses and not so good for others.
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Top reviews from the United States

  • Reviewed in the United States on April 15, 2025
    Color: BlackSize: 512GBStyle: Up to 400 MB/sVerified Purchase
    I’m not a formal reviewer so no benchmarks but when using this drive to replace two 256GB drives it impressed me as a good flash drive with relatively fast write speeds. (~30Mbps).

    Form factor is also good.
  • Reviewed in the United States on September 19, 2024
    Color: BlackSize: 512GBStyle: Up to 150 MB/sVerified Purchase
    The SanDisk Ultra Dual Drive Go 512GB is a perfect solution for anyone needing reliable and portable storage across different devices. With both USB Type-C and USB Type-A connectors, it's super easy to transfer files between my phone, tablet, and laptop, regardless of the port type. The dual functionality makes it ideal for people working across different platforms, from PCs to smartphones.

    The 512GB capacity provides plenty of space for photos, videos, and large files, and the USB 3.1 speeds are fast, allowing for quick transfers without any lag. It’s great for backing up data or simply carrying around important files.

    The slim, swivel design is compact and protects the connectors when not in use, which makes it super convenient to toss in a bag or even your pocket without worrying about damage.

    Overall, the SanDisk Ultra Dual Drive Go offers a great combination of high-capacity storage, speed, and versatility. It's an excellent investment for anyone needing reliable, cross-device storage.
    21 people found this helpful
    Report
  • Reviewed in the United States on February 20, 2025
    Color: BlackSize: 512GBStyle: Up to 150 MB/sVerified Purchase
    This was tiny! I have other 512 Gb USB and this is so tiny. It feels a bit flimsy but works fine. I wish it was both C and USB but it is what it is. I have no complaints. It works as it should. I recommend it.
    2 people found this helpful
    Report
  • Reviewed in the United States on August 7, 2024
    Color: BlackSize: 512GBStyle: Up to 150 MB/sVerified Purchase
    This works both on macOS (Yosemite all the way up to Sonoma) and Windows (10, 11). I am able to easily transfer and work with (print, edit) files on this flash drive no matter which system I am using. I have also used this drive while plugged into my iPhone 15 and it works just fine. Using the Files app and browsing to the flash drive, I can see and open the files on it with no problem. The entire device itself is quite small and portable, so it fits in any pocket, pouch, or on any keychain without taking up a lot of space.

    While I have only been using it for a short while (three weeks), it has always been available and reliable, with no hiccups or complaints from either Windows or macOS about the drive not being visible/readable/ready.

    The only reason this is not a 5-star item is the physical design. I like that you can have either side/connector (USB-A or USB-C) out/open by spinning the flash drive, but that also means that whichever side is out is exposed. This device DOES NOT come with any kind of dust/protective cover for either connector. For that matter, the side that is not exposed isn't exceedingly well protected either, but it is better than nothing. I would like it if the device came with protective caps for the connectors or allowed you to control exposure of the connector ends.

    Shy of that one issue (lack of dust covers for connectors), this is a very good flash drive.
    8 people found this helpful
    Report
  • Reviewed in the United States on April 6, 2025
    Color: BlackSize: 256GBStyle: Up to 150 MB/sVerified Purchase
    Even bigger data moves. Sneakernet has never been so great. Plug it in and let it do it's magic. Huma, Cheryl and Debbie in our offices love them. Field expedient paragraph marking data strips are so easy.
  • Reviewed in the United States on February 24, 2025
    Color: Absinthe GreenSize: 256GBStyle: Up to 400 MB/sVerified Purchase
    Super fast -- Large capacity -- Works on phone, tablet, and computers nicely. the Dual interface is great. Backup SW for phone is nice add on. I really like the device - Did put a handle cord on the device to help find/pickup ...
    5 people found this helpful
    Report
  • Reviewed in the United States on March 29, 2025
    Color: BlackSize: 128GBStyle: Up to 400 MB/sVerified Purchase
    Works for what I need it for. My iPhone detects it no problem and the 400mb transfer speed isn’t unbearably slow. The drive is already formatted so that my pc reads it. Quality is what is expected and should last as long as I don’t misplace the tiny thing. Only wished they designed it to cover both ports, but it is not a deal breaker. Sandisk has always been my choice when it comes to flash drives.
  • Reviewed in the United States on January 26, 2025
    Color: BlackSize: 512GBStyle: Up to 400 MB/sVerified Purchase
    I rarely write reviews, but sometimes it’s best to share your experience so others can make an informed choice.

    This 512 GB flash drive is tiny and quite useful because it has both USB-A and USB-C connectors. I have to go back and forth with laptops and desktops that have one or the other and it’s very convenient to use this drive; it holds a lot and will plug-and-play in older and newer machines. Because it’s so small, it’s easy to carry in a pocket or wallet, and with the capacity, will hold a decent number of files, pictures, videos, etc. Except for the USB-C connector (which is metal), the entire housing is plastic; very lightweight.

    The most prominent characteristic of usage is that it’s the slowest flash drive I’ve ever owned (going back about 15 years), regardless of capacity or connector. Using either the the USB-C or USB-A ports, opening a window just to look at the contents can take 15 seconds to display what’s on it. Music files sometimes have dead spots (gaps) while the song plays, as the file loads to cache. A 15 GB copy takes roughly an hour. If these types of operating times aren’t satisfactory for your typical usage, it might be best to consider alternatives.
    11 people found this helpful
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  • マサラ
    5.0 out of 5 stars データ保存に便利
    Reviewed in Japan on April 24, 2025
    Color: BlackSize: 256GBStyle: Up to 150 MB/sVerified Purchase
    動画を保存するのに使っている。
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  • Antonio
    5.0 out of 5 stars Excelente!
    Reviewed in Mexico on January 18, 2025
    Color: BlackSize: 1TBStyle: Up to 400 MB/sVerified Purchase
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    5.0 out of 5 stars Muy buen producto!
    Reviewed in Mexico on November 7, 2023
    Color: Mint GreenSize: 256GBStyle: Up to 150 MB/sVerified Purchase
    El producto llego antes de lo dicho que es un punto bueno para Amazon, el producto cumple con lo especificado, el material se siente frágil pero la verdad es un buen producto!
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    5.0 out of 5 stars ok
    Reviewed in Belgium on April 15, 2025
    Color: BlackSize: 128GBStyle: Up to 150 MB/sVerified Purchase
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    Reviewed in the Netherlands on March 29, 2025
    Color: BlackSize: 128GBStyle: Up to 150 MB/sVerified Purchase
    Good product for this price.
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