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Small black USB flash drive with swivel metal cover revealing USB-C and USB-A connectors, keyring hole visible

SanDisk

SanDisk Ultra Dual Drive Go SDDDC3-256G-G46 256GB USB flash drive

SKU CH-N8BZ-PT9QG MPN SDDDC3-256G-G46

256GB flash drive with reversible USB-C and USB-A connectors, up to 400MB/s read speed and a swivel design with keyring hole

  • USB SpecificationUSB 3.2 Gen 1
  • USB ConnectorsType-C USB-A
  • ColorBlack
  • Capacity256GB
  • Read Speedup to 400MB/s
  • FeaturesThe 2-in-1 flash drive with a reversible USB Type-C and a tr

USB Specification Ultra Dual

Capacity 256GB

Struck-through versions exist but are not stocked here.

  • 2-in-1 USB-C and USB-A connectors move files between phones, tablets and computers
  • Up to 400MB/s read speed transfers large files quickly
  • 256GB capacity frees space on USB-C smartphones for more photos
  • SanDisk Memory Zone app automatically backs up photos
  • Swivel design protects connectors and includes a keyring hole for portability

Dual-connector flash drive

The SanDisk Ultra Dual Drive Go is a 256GB USB flash drive that combines a reversible USB Type-C connector with a traditional USB Type-A connector in a single swivel housing. It uses the USB 3.2 Gen 1 interface to deliver read speeds up to 400MB/s. The compact black design includes a keyring hole for portability. It is built for users who need to move files between modern Type-C devices and legacy Type-A computers.

Suits Type-C and Type-A workflows

This drive suits anyone who transfers photos, videos or documents between USB Type-C smartphones, tablets or Macs and older USB Type-A laptops or desktops. The SanDisk Memory Zone app can automatically back up phone content to free up local storage. It is not for buyers who need more than 256GB of capacity. It is also not for users who require a drive with only a single fixed connector type.

400MB/s read speed decides fit

The headline specification that determines suitability is the maximum read speed of 400MB/s over USB 3.2 Gen 1. This throughput governs how quickly large media libraries can be copied to a computer or offloaded from a phone. If your workflow demands sustained write performance or faster transfer rates, this model will not meet that requirement.

Highlights

  • 2-in-1 USB-C and USB-A connectors move files between phones, tablets and computers
  • Up to 400MB/s read speed transfers large files quickly
  • 256GB capacity frees space on USB-C smartphones for more photos
  • SanDisk Memory Zone app automatically backs up photos
  • Swivel design protects connectors and includes a keyring hole for portability

Specifications

BrandSanDisk
SeriesUltra Dual Drive Go
ModelSDDDC3-256G-G46
USB SpecificationUSB 3.2 Gen 1
USB ConnectorsType-C
USB-A
ColorBlack
Capacity256GB
Read Speedup to 400MB/s
FeaturesThe 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.
Free up space on your USB Type-C smartphone so you can take more photos.
Automatically back up photos using the SanDisk Memory Zone app.
High-performance USB 3.2 Gen 1 drive with 400MB/s read speeds lets you quickly move your files to your computer.
Dual-purpose swivel design protects connectors and features a keyring hole to take your drive on the go.
Dimensions0.34" x 0.48" x 1.75"
Weight0.01 lb.
Shipping weight0.01 kg
Package size156 × 101 × 9 mm

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Which ports must my phone or laptop have to use both connectors on the SanDisk Ultra Dual Drive Go SDDDC3-256G-G46?

Your device needs a USB Type-C port for the reversible connector and a USB Type-A port for the traditional connector to access the full 2-in-1 functionality.

Will the drive work at USB 3.2 Gen 1 speeds when I plug it into my older USB 3.1 Gen 1 laptop port?

Yes, the USB 3.2 Gen 1 specification is backward compatible with USB 3.1 Gen 1 ports, so you will see the same 150MB/s read performance on that laptop.

How can I confirm the drive is delivering the advertised 400MB/s read speed after I set it up?

Run a standard USB flash drive benchmark tool on a USB 3.2 Gen 1 Type-C or Type-A port and verify the sequential read result reaches up to 400MB/s.

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