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SanDisk Ultra Dual 256GB retractable flash drive with USB-C and USB-A connectors

SanDisk

SanDisk SDDDC2-256G-G46 256GB Ultra Dual USB 3.1 Type-C USB flash drive

SKU CH-XH6R-JAGND MPN SDDDC2-256G-G46

Dual-connector flash drive with 256GB capacity and up to 150MB/s read speed for USB-C and USB-A devices

  • Total capacity256 GB
  • USB standardUSB 3.1 (Gen 1)
  • Max read speedup to 150 MB/s
  • Key featuresEasily transfer files between smartphones, tablets and compu
  • Product dimensions0.37 in × 0.79 in × 1.5 in
  • Product weight0.02 lb (0.01 kg)

Capacity 256GB

  • 256 GB capacity stores large media libraries
  • up to 150 MB/s read speed moves files quickly
  • reversible USB-C and traditional USB connectors work with phones and PCs
  • retractable design protects both connectors from damage
  • compact 0.37" x 0.79" x 1.50" size fits on a keyring

256GB Ultra Dual USB 3.1 Type-C

The SanDisk Ultra Dual Drive SDDDC2-256G-G46 provides 256GB of storage in a compact flash drive. It features a reversible USB Type-C connector and a traditional USB connector. The retractable design protects both interfaces when not in use. Read speeds reach up to 150MB/s for quick file access.

Android users needing direct phone backup

This drive suits anyone moving photos, videos or documents between USB Type-C phones, tablets and computers without a cable. It frees up space on Android devices instantly. Buyers who require higher write performance for large video recording should look at something else. Users needing hardware encryption or rugged water resistance will not find those features here.

USB 3.1 Gen 1 interface with dual connectors

The single specification that decides compatibility is the USB 3.1 Gen 1 interface combined with both Type-C and Type-A plugs. Your devices must support USB On-The-Go for direct smartphone transfers. The drive draws power from the host port and requires no external supply. Capacity is fixed at 256GB with no expansion option.

How it compares

Measured against everything we stock in USB Thumb Drives, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 74% of the 1,099 comparable items (median $31.99).
Total capacity 256 GB
Higher than about 80% of the 746 comparable items (median 64 GB).
Price per TB $74.18 per TB
Cheaper than about 96% of the 600 comparable items (median $226.48 per TB).

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Specifications

Product
Brand nameSanDisk
Product lineUltra Dual
Model nameSDDDC2-256G-G46
Total capacity256 GB
Performance
Max read speedup to 150 MB/s
Ports & slots
USB standardUSB 3.1 (Gen 1)
Size & build
Product dimensions0.37 in × 0.79 in × 1.5 in
Product weight0.02 lb (0.01 kg)
Shipping weight0.03 kg
Package size152 × 99 × 10 mm

Other versions of this model

2 more in the same range

Questions about this item

What does the USB 3.1 Gen 1 interface cap the read speed at in practice?

The drive uses USB 3.1 Gen 1, which supports up to 150 MB/s read speed on compatible ports.

What physical space does the retractable dual-connector design need to fit?

It measures 0.37" x 0.79" x 1.50" and weighs 0.02 lb, so it fits standard USB-A and USB-C ports side by side.

How do I install the drive on an Android phone, and what step do people miss?

Plug the USB-C end into the phone, allow file access in the prompt, then use the file manager to move data; skipping the permission prompt is the common mistake.

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