SanDisk® QuickFlow™ microSD™ UHS-I Card USB-A Reader [SDDR-B731-GN6NN]

SanDisk SDDR-B731-GN6NN Overview

Quickly transfer 4K UHD videos and raw photos using the QuickFlow UHS-I microSD Card Reader from SanDisk, which features one dedicated UHS-I microSDXC card slot. Using its USB-A 3.2 Gen 1 interface, this card reader can deliver read speeds of up to 250 MB/s and write speeds of up to 150 MB/s. It is also bus-powered and backward compatible with USB 2.0. Thanks to its compact, lightweight, and portable build, it can be taken virtually anywhere.

The Right Moment

Enthusiasts and professionals alike invest countless hours capturing thousands of high-resolution raw images and hours of 4K UHD video clips that reflect their creative vision. This reader helps reduce the time needed to move the massive files captured in pursuit of the right moment.

Speed Records Set, Again

Save precious time with read speeds up to 250 MB/s and write speeds up to 150 MB/s when paired with the 2TB SanDisk Extreme PRO microSDXC UHS-I card (sold separately).

SanDisk QuickFlow Technology

In addition to being an industry leader in microSD card development, SanDisk delivers workflow solutions that provide you with exceptional performance at every phase of your creative journey. SanDisk QuickFlow technology elevated speeds beyond UHS-I's 104 MB/s barrier for the first time in 2018, then made them even faster in 2022, and faster still in 2024 to enable super-efficient UHS-I workflows.

Seamless Compatibility

With a USB-A 3.2 Gen 1 Type A connector, you can count on this reader working with USB 3.2 Gen 1 (3.1 Gen 1/3.0) and USB 2.0 ports for assurance of compatibility with most computers produced in the last decade.

Effortless Portability

Its compactness and ultra-light weight make this SanDisk QuickFlow Reader easy to carry in your camera bag, backpack, or pocket.