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 |
Add to your order
- Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
- 24/7 support when you need it.
- Quick, easy, and frustration-free claims.
- 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).
- Free shipping for in–lab data recovery; 24/7 online case status tracking
- If your data isn’t recovered, you get your money back.
- 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 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
- If your data isn’t recovered, you get your money back.
Add to your order
- Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
- 24/7 support when you need it.
- Quick, easy, and frustration-free claims.

Enjoy fast, free delivery, exclusive deals, and award-winning movies & TV shows with Prime
Try Prime
and start saving today with fast, free delivery
Amazon Prime includes:
Fast, FREE Delivery is available to Prime members. To join, select "Try Amazon Prime and start saving today with Fast, FREE Delivery" below the Add to Cart button.
Amazon Prime members enjoy:- Cardmembers earn 5% Back at Amazon.com with a Prime Credit Card.
- Unlimited Free Two-Day Delivery
- Streaming of thousands of movies and TV shows with limited ads on Prime Video.
- A Kindle book to borrow for free each month - with no due dates
- Listen to over 2 million songs and hundreds of playlists
- Unlimited photo storage with anywhere access
Important: Your credit card will NOT be charged when you start your free trial or if you cancel during the trial period. If you're happy with Amazon Prime, do nothing. At the end of the free trial, your membership will automatically upgrade to a monthly membership.
Buy new:
$23.77$23.77
Ships from: Amazon Sold by: FC Ecom
Save with Used - Like New
$19.68$19.68
Ships from: Amazon Sold by: Amazon Resale
-
-
-
-
-
-
-
7 VIDEOS
-

Image Unavailable
Color:
-
-
-
- To view this video download Flash Player
SanDisk 256GB Ultra Dual Drive Go USB Type-C Flash Drive, Black - SDDDC3-256G-GAM46
Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
Learn more
Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
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.)
Frequently bought together

Top rated similar items
Top Brand: SanDisk
Compare with similar items
This Item ![]() SanDisk 256GB Ultra Dual Drive Go USB Type-C Flash Drive, Black - SDDDC3-256G-GAM46 | Recommendations | |||||
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $23.77$23.77 | -19% $21.99$21.99 List: $26.99 | $21.30$21.30 | $25.16$25.16 | -23% $25.48$25.48 List: $32.99 | $22.89$22.89 |
Delivery | Get it as soon as Tuesday, May 6 | Get it as soon as Tuesday, May 6 | Get it as soon as Tuesday, May 6 | Get it as soon as Tuesday, May 6 | Get it as soon as Tuesday, May 6 | Get it as soon as Tuesday, May 6 |
Customer Ratings | ||||||
Sold By | FC Ecom | Amazon.com | Sales For You | CWP Online | CWP Online | MemoryWhiz |
memory capacity | 256 GB | 256 GB | 256 GB | 256 GB | 256 GB | 256 GB |
write speed | 4E+2 megabytes per second | less than 150MB/s | — | 150 | 400 MB/s | 75 MB/s |
read speed | 400 megabytes per second | 150 megabytes per second | 400 megabytes per second | 150 megabytes per second | 400 megabytes per second | 150 megabytes per second |
From the manufacturer


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)

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.

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

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]

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.

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.
Videos
Videos for this product
0:30
Click to play video
SanDisk Ultra Dual Drive GoSandisk Technologies, Inc
Product information
Technical Details
Additional Information
Customer Reviews |
4.4 out of 5 stars |
---|---|
Best Sellers Rank | #60 in USB Flash Drives |
Warranty & Support
Feedback

SanDisk 256GB Ultra Dual Drive Go USB Type-C Flash Drive, Black - SDDDC3-256G-GAM46
Share:
Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.
Where did you see a lower price?
Fields with an asterisk * are required
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
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers 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
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
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
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
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
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
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
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
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
Reviews with images

Not what I expected
Top reviews from the United States
There was a problem filtering reviews. Please reload the page.
- Reviewed in the United States on April 15, 2025Color: BlackSize: 512GBStyle: Up to 400 MB/sVerified PurchaseI’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, 2024Color: BlackSize: 512GBStyle: Up to 150 MB/sVerified PurchaseThe 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.
- Reviewed in the United States on February 20, 2025Color: BlackSize: 512GBStyle: Up to 150 MB/sVerified PurchaseThis 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.
- Reviewed in the United States on August 7, 2024Color: BlackSize: 512GBStyle: Up to 150 MB/sVerified PurchaseThis 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.
- Reviewed in the United States on April 6, 2025Color: BlackSize: 256GBStyle: Up to 150 MB/sVerified PurchaseEven 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, 2025Color: Absinthe GreenSize: 256GBStyle: Up to 400 MB/sVerified PurchaseSuper 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 ...
- Reviewed in the United States on March 29, 2025Color: BlackSize: 128GBStyle: Up to 400 MB/sVerified PurchaseWorks 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, 2025Color: BlackSize: 512GBStyle: Up to 400 MB/sVerified PurchaseI 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.
Top reviews from other countries
-
マサラReviewed in Japan on April 24, 2025
5.0 out of 5 stars データ保存に便利
Color: BlackSize: 256GBStyle: Up to 150 MB/sVerified Purchase動画を保存するのに使っている。
とても小さく軽いのに容量が大きく書き込みスピードも早く気に入っている。
-
AntonioReviewed in Mexico on January 18, 2025
5.0 out of 5 stars Excelente!
Color: BlackSize: 1TBStyle: Up to 400 MB/sVerified PurchaseMuy útil y versatil para transferir y respaldar datos.
-
Gerson MacielReviewed in Mexico on November 7, 2023
5.0 out of 5 stars Muy buen producto!
Color: Mint GreenSize: 256GBStyle: Up to 150 MB/sVerified PurchaseEl 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!
-
DUJEUX BéatriceReviewed in Belgium on April 15, 2025
5.0 out of 5 stars ok
Color: BlackSize: 128GBStyle: Up to 150 MB/sVerified Purchaseparfait pour mon utilité
- PineappleReviewed in the Netherlands on March 29, 2025
5.0 out of 5 stars overall good product
Color: BlackSize: 128GBStyle: Up to 150 MB/sVerified PurchaseGood product for this price.
Decent write and read speeds.