SanDisk Ultra 256GB USB-C Flash Drive, up to 150MB/s read

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Product guide

SanDisk Ultra 256GB USB-C Flash Drive, up to 150MB/s read

SanDisk Ultra USB-C Flash Drive (SDDDC2-256G-A46) provides 256 GB of removable storage for USB-C computers and, with OTG support, compatible phones and tablets. The listing claims read speeds up to 150MB/s and a retractable connector, but customer feedback flags difficulty operating the tip.

At a glance

USB-C connector is intended for compatible computers, phones and tablets without an adapter.
Manufacturer claims read speeds up to 150MB/s when used with a USB 3.1 Gen 1 or USB 3.0 port. Actual performance can vary by host and use conditions.
Retractable connector is designed to leave more room for adjacent host-device ports.
SanDisk SecureAccess encryption uses 128-bit AES, with software download required for Mac. The listing names Windows 7, Windows 8, Windows 10 and MacOS v10.9+ as supported.

Price

$62.99Save 20%

Reference price: ~~$78.95~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

256 GB capacity suits carrying schoolwork and other files across compatible devices.
USB-C connector avoids an adapter on hosts with a matching port.
Small listed weight of 4.3 g makes it easy to carry.

Cons

Customer feedback reports that the retractable tip can be difficult to operate or remove.
Smartphones and tablets require OTG support, so a USB-C port alone does not establish compatibility.

Technical specifications

11 specifications

Identity
Brand	SANDISK
Model	SDDDC2-256G-A46

Connectivity and controls
Connection listed	USB
Hardware interface	USB 3.0
Connector	USB Type C
Special features	Retractable Connector;Encrypted
Claimed read speed	150 megabytes_per_second
Listed write speed	less than 150MB/s

Storage
Capacity	256 GB

Dimensions and weight
Product dimensions	5.94 x 1.27 x 0.86 cm; 4.3 g
Weight	4.3 g

What to know before buying

Listing details to confirm

The page has inconsistent model identifiers: the title and model field identify SDDD C2-256G-A46, while separate model-number fields list SDCZ460-256G-G46. The connection is described as USB, USB 3.0 and USB 3.1 Gen 1 in different fields, and the title's read-speed claim is presented alongside a listed write speed below 150MB/s. Confirm the selected model and speed details before buying. Mobile use requires OTG support. Performance depends on host and usage conditions, and advertised capacity is measured before formatting, with actual user storage less. App installation or download may be required, and some services require registration and terms acceptance.

Who is it for?

A good fit for

People who need 256 GB of portable storage for school or file transfers between USB-C devices.
USB-C computer users who want a compact flash drive with a retractable connector.
Phone or tablet owners whose device supports USB OTG and who want to move or back up files.

Less suited to

Buyers who need a confirmed model identity or unambiguous interface specification without checking the listing details.
People who need a drive with a reliably easy-to-operate connector based on the reported handling concerns.
Devices without USB-C, or phones and tablets without USB OTG support.

SanDisk Ultra 256GB USB-C Flash Drive, up to 150MB/s read · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 3,542 ratings

5 stars69%69%
4 stars15%15%
3 stars7%7%
2 stars2%2%
1 star7%7%

Customer feedback praises the capacity for school use and the drive's size, while reporting difficulty operating or removing the tip. Opinions are mixed on reliability, value, speed and connectivity, with negative feedback also mentioning ease of use and build quality. These handling concerns matter for frequent plugging and unplugging. The claimed read speed is a manufacturer specification, not proof that customers consistently experience it.

Positive themes

Customers describe the storage capacity as useful for school and appreciate the size.

Negative themes

Feedback describes difficulty removing or operating the tip and concerns about ease of use and build quality.

Mixed feedback

Customer opinions vary on reliability, value for money, speed and connectivity.

Frequently asked questions

Will it work with a phone or tablet?

The listing specifies USB-C phones and tablets, but mobile devices also need On-The-Go (OTG) support. Confirm that your particular device supports OTG.

Does it deliver 150MB/s for both reading and writing?

No such combined speed is stated. The title and manufacturer copy claim read speeds up to 150MB/s, while the listed write speed is less than 150MB/s and may vary by capacity. Actual performance also depends on the host and usage conditions.

Which model is this listing for?

The title and model field name SDDD C2-256G-A46, while other model-number fields give SDCZ460-256G-G46. Check the selected listing because the page identifiers conflict.

Is encryption software included?

The listing says SanDisk SecureAccess is included, with password-protected 128-bit AES encryption. Software download is required for Mac, and the named supported systems are Windows 7, Windows 8, Windows 10 and MacOS v10.9+.