US
Sandisk

SanDisk Ultra Dual Drive m3.0 Micro USB Flash Drive 128GB

  • 128GB
  • Micro-USB + USB 3.0 Type-A connectors
  • Up to 150MB/s read to computer
  • Retractable design
  • OTG support required on phone
  • SanDisk Memory Zone app backup
  • 4.54 g, 5 year warranty

Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A tiny two ended flash drive that moves photos off older micro-USB Android phones and onto a computer. It does not fit USB-C phones, which most current models use.

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ASIN: B01M0QR22BCategory: USB Flash Drives

Sizes Available

32 GB64 GB128 GB128 GB (Pack of 3)256 GB

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Overview

A sliding retractable mechanism switches this SanDisk drive between a micro-USB plug for Android phones and a full size USB plug for computers. The Memory Zone app backs up a phone's camera roll to it.

Two plugs on one stick make it simple to free phone storage and carry files to a PC. Only phones with micro-USB and OTG support work, so newer USB-C phones need a different model.

Who it's for

Users of older Samsung, LG, Motorola and HTC phones who want quick backups. Owners of current phones should choose a USB-C dual drive.

Pros and cons

Pros
  • Two connectors in one
  • Retractable, no caps to lose
  • Fast computer transfers
  • Phone backup app
Cons
  • Micro-USB only, no USB-C
  • Requires OTG support
  • Write speed lower than read

Performance notes

Transfer speed to a computer depends on a fast USB port, with older ports running slower. Phone transfers are limited by the phone's micro-USB connection. Write speeds are lower than reads and vary by capacity.

Specifications

BrandSandisk
Dimensions & fit
Item weight4.54 g
Capacity & performance
Memory Storage Capacity128 GB
Read SpeedUp to 150MB/s
Construction & materials
ColorBlack/Gray
Compatibility & installation
Hardware Connectivity TechnologyMicro-USB and USB 3.0 Type-A
Compatible DevicesAndroid devices with micro-USB and OTG, PC, Mac
Warranty & support
Warranty Description5 Year
Other details
Additional FeaturesRetractable connector, OTG, SanDisk Memory Zone app

Frequently asked questions

Will the SanDisk Dual Drive m3.0 work with a USB-C phone?

No. It needs a phone with a micro-USB port and On-The-Go support.

How do I back up my phone with the Dual Drive?

Install the SanDisk Memory Zone app from Google Play and set up automatic backup in its settings.