SanDisk SDDDC3-128G-G46PC 128GB Ultra Dual USB-C Drive — main product image

SanDisk SDDDC3-128G-G46PC 128GB Ultra Dual USB-C Drive

SanDisk

SanDisk SDDDC3-128G-G46PC 128GB Ultra Dual USB-C Drive

Name: SanDisk SDDDC3-128G-G46PC 128GB Ultra Dual USB-C Drive
Brand: SanDisk
SKU: SDDDC3-128G-G46PC

★★★★★4.6 (26940 reviews)

USB-CUSB 3.1USB 3.0

Transfer files between USB-C and USB-A devices instantly with 150MB/s speeds and a swivel design.

$18.99*

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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The SanDisk Ultra Dual Drive Go 128GB is built for the reality of modern device ecosystems, where USB Type-C and Type-A ports coexist across smartphones, tablets, laptops, and desktops. Rather than carrying adapters or relying on cloud transfers, this flash drive lets you plug directly into either port type thanks to its dual-connector design. The USB 3.1 Gen 1 interface delivers read speeds up to 150MB/s, making it quick work to move large photo libraries, video files, or document archives between devices.

The swivel design is more than cosmetic — it protects the inactive connector from physical damage and pocket lint while keeping both ends accessible with a simple twist. A built-in keyring hole lets you attach the drive to your keys or bag so it's always within reach. For smartphone users, the companion SanDisk Memory Zone app adds automatic photo backup functionality, turning the drive into a simple offline backup solution that frees up valuable phone storage without needing a Wi-Fi connection or cloud subscription.

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

SDDDC3-128G-G46PC

Capacity

128GB

Interface

USB Type-C and USB Type-A

USB Standard

USB 3.1 Gen 1

Read Speed

Up to 150MB/s

Design

Swivel with keyring hole

Companion Software

SanDisk Memory Zone app

Pros & Cons

👍 Pros

Dual USB-C and USB-A connectors eliminate the need for adapters or dongles
150MB/s read speeds make file transfers quick and efficient
Compact swivel design protects both connectors and includes a keyring hole for portability
128GB capacity provides ample space for photos, videos, documents, and backups
SanDisk Memory Zone app enables automatic photo backups from compatible smartphones

👎 Cons

Write speeds are lower than read speeds and vary by capacity
Requires OTG support on smartphones, which not all devices have
No encryption software included for securing sensitive files
Small form factor makes it easy to misplace without attaching to a keyring

Frequently Asked Questions

Does this drive work with both USB-C and USB-A ports?

Yes, it features a reversible USB Type-C connector on one end and a traditional USB Type-A connector on the other, so it works with both types of ports.

What read speeds can I expect from this flash drive?

The drive supports USB 3.1 Gen 1 with read speeds up to 150MB/s, though actual performance may vary depending on the host device and conditions.

Can I use this drive to free up space on my smartphone?

Yes, you can connect it to a USB Type-C smartphone with OTG support to transfer photos, videos, and files directly off the device.

What is the SanDisk Memory Zone app?

It's a free downloadable app that lets you automatically back up photos from your smartphone to the flash drive, helping manage your device's storage.

Does the swivel design protect the connectors?

Yes, the dual-purpose swivel mechanism covers whichever connector is not in use, protecting it from damage and debris.