SanDisk SDDDC3-256G-G46PC 256GB Ultra Dual Drive USB-C — main product image

SanDisk SDDDC3-256G-G46PC 256GB Ultra Dual Drive USB-C

SanDisk

SanDisk SDDDC3-256G-G46PC 256GB Ultra Dual Drive USB-C

Name: SanDisk SDDDC3-256G-G46PC 256GB Ultra Dual Drive USB-C
Brand: SanDisk
SKU: SDDDC3-256G-G46PC

★★★★★4.6 (26928 reviews)

USB-CUSB 3.1USB 3.0

SanDisk's 256GB dual-connector flash drive moves files between USB-C and USB-A devices at up to 150MB/s.

$23.16*

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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The SanDisk Ultra Dual Drive Go (SDDDC3-256G-G46PC) is designed to solve one of the most common frustrations in modern computing: moving files between devices with different USB port types. With a reversible USB Type-C connector on one end and a traditional USB Type-A connector on the other, this 256GB flash drive connects directly to smartphones, tablets, Macs, and PCs without requiring any dongles or adapters. The swivel design keeps both connectors protected when the drive is in your pocket or bag, and the compact form factor makes it easy to carry anywhere.

Performance is built on the USB 3.1 Gen 1 interface, delivering read speeds up to 150MB/s for quick file transfers. While write speeds are lower and vary depending on the host device and usage conditions, the drive handles everyday tasks like backing up photos, transferring documents, and moving media files with ease. The companion SanDisk Memory Zone app adds automatic photo backup from compatible mobile devices, freeing up phone storage without manual effort. For anyone who regularly works across USB-C and USB-A ecosystems, this drive provides a practical, pocket-sized bridge between them.

Key Features

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

Free up space on your USB Type-C smartphone(2)

Automatically back up photos with SanDisk Memory Zone app(3); (3) Download and installation of SanDisk Memory Zone app required.

High-performance USB 3.1 Gen 1 drive with 150MB/s read speeds(1); (1) Read speeds up to 150MB/s. Write speed lower and vary by capacity. USB Type-C port with USB 3.1 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.

Specifications

Brand

SanDisk

Model

SDDDC3-256G-G46PC

Capacity

256GB

Connectors

USB Type-C and USB Type-A

Interface

USB 3.1 Gen 1

Read Speed

Up to 150MB/s

Design

Swivel

Pros & Cons

👍 Pros

Dual USB-C and USB-A connectors eliminate the need for adapters when switching between devices
Compact swivel design protects both connectors when not in use
256GB capacity provides ample portable storage for large file libraries
USB 3.1 Gen 1 interface delivers read speeds up to 150MB/s
SanDisk Memory Zone app enables automatic photo backup from compatible smartphones

👎 Cons

Write speeds are significantly lower than the 150MB/s read speed and are not specified by SanDisk
OTG compatibility is required for mobile use and not all USB-C phones support it
The small form factor makes the drive easy to misplace
No hardware encryption or password protection is included
The swivel mechanism may loosen over time with frequent use

Frequently Asked Questions

Can I use this drive with my smartphone?

Yes, provided your smartphone has a USB Type-C port with OTG (On-The-Go) support. Check SanDisk's website for a list of confirmed compatible devices.

Does the drive work with both USB-C and USB-A ports without an adapter?

Yes, it has both connectors built in with a swivel design, so you can plug directly into either port type without any adapter.

What read and write speeds can I expect from this drive?

Read speeds reach up to 150MB/s via USB 3.1 Gen 1. Write speeds are lower and vary by capacity and host device conditions.

What is the SanDisk Memory Zone app?

It is a free app that lets you automatically back up photos and manage files on your phone. It requires separate download and installation on your mobile device.

Is this drive backward compatible with USB 2.0 ports?

Yes, the USB-A connector will work in USB 2.0 ports, though transfer speeds will be limited to USB 2.0 rates rather than the full USB 3.1 Gen 1 speeds.