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Small black USB-A microSD card reader, compact rectangular shape

SanDisk

SanDisk SDDR-B531-AN6NN USB 3.0 Card Reader

SKU CH-87TH-TPP22 MPN SDDR-B531-AN6NN

A compact USB 3.0 microSD reader transfers files at up to 170MB/s with no software required

  • TypeFlash Reader
  • InterfaceUSB 3.0, USB-A
  • Dimensions0.34" x 0.81" x 1.20"
  • FeaturesTransfer speeds of up to 170MB/s Move big files fast, move a
  • Transfer up to 170 MB/s with USB 3.0 interface
  • Move files up to 10x faster than USB 2.0 readers
  • Compact design measures .34 x .81 x 1.20 inches
  • Works with microSD cards from cameras and drones
  • No software or downloads required for operation

SanDisk MobileMate USB 3.0 Reader

The SanDisk MobileMate SDDR-B531-AN6NN is a compact USB 3.0 card reader designed for microSD cards. It connects via a standard USB-A port and requires no drivers or extra software. Transfer speeds reach up to 170MB/s, moving large files quickly.

Photographers and drone pilots with microSD media

This reader suits anyone needing fast, driver-free offloads from microSD cards used in cameras or drones. It is not for users who need to read full-size SD, CFexpress, or other card formats, nor for those requiring multiple simultaneous card slots.

Driver-free operation and broad compatibility

The device works immediately on any host with a USB-A port, supporting USB 3.0 and falling back to USB 2.0. No bundled utilities or firmware tools are included, so workflow stays limited to simple drag-and-drop transfers.

Highlights

  • Transfer up to 170 MB/s with USB 3.0 interface
  • Move files up to 10x faster than USB 2.0 readers
  • Compact design measures .34 x .81 x 1.20 inches
  • Works with microSD cards from cameras and drones
  • No software or downloads required for operation

Specifications

BrandSanDisk
ModelSDDR-B531-AN6NN
TypeFlash Reader
InterfaceUSB 3.0, USB-A
Dimensions0.34" x 0.81" x 1.20"
FeaturesTransfer speeds of up to 170MB/s
Move big files fast, move a lot of files fast or just make frequent file transfers that much quicker.
Move files up to 10x faster than with USB 2.0 Readers
The MobileMate USB 3.0 microSD card reader delivers the performance of USB 3.0 - so you can move files faster and get back to all the other things you would rather be doing.
Compact and durable design
With its small but sturdy design, the MobileMate USB 3.0 microSD card reader is easy to take anywhere and can hold its own when tossed in your bag with all your other gear.
USB 3.0-Compatible
The Mobi
Shipping weight0.08 kg
Package size109 × 69 × 28 mm

Questions about this item

What type of USB port does my computer need to use the SDDR-B531-AN6NN reader?

The reader plugs into a standard USB-A port and works with USB 3.0 or USB 2.0 connections.

Will this reader still work if I connect it to an older USB 2.0 port?

Yes, it is backwards-compatible with USB 2.0, though transfer speeds will be limited to that standard.

How can I confirm the reader is performing at its rated speed after setup?

Transfer a large file to your computer and verify the sustained rate approaches 170MB/s with a compatible microSD card.

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