
Price history
SanDisk
SanDisk SDDR-B531-GN6NN MobileMate microSD Card Reader - USB 3.0
★★★★★
USB 3.0USB 2.0
Compact USB 3.0 microSD reader delivering transfer speeds up to 170MB/s in a pocket-friendly design.
$15.31*$17.02Save 10%
View on Amazon
✓ In Stock on Amazon.com
*Price sourced from Amazon.com. Last updated:Jul 24, 2026.Price and availability are subject to change.
Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.
Notice a mistake? Let Us Know
Overview
Key Features
Compact and durable microSD card reader
Fast UHS-I transfer speeds of up to 170 MB/s*
With USB 3.0, move content up to 10x faster than USB 2.0 readers(2)
Compatible with USB 3.0 and backwards-compatible with USB 2.0
Two-year limited manufacturer warranty(1)
Dimensions (L x W x H) - 30.48mm x 20.701mm x 8.763mm
Specifications
Brand
SanDisk
Model
SDDR-B531-GN6NN
Interface
USB 3.0 (backward compatible with USB 2.0)
Transfer Speed
Up to 170MB/s
Card Compatibility
microSD, UHS-I
Dimensions
30.48mm x 20.701mm x 8.763mm
Frequently Asked Questions
Does the SanDisk MobileMate reader support full-size SD cards?
No, this reader accepts only microSD cards. You would need a separate reader for full-size SD cards.
Is the SDDR-B531-GN6NN compatible with USB 2.0 ports?
Yes, it is backward compatible with USB 2.0, though transfer speeds will be limited to USB 2.0 rates.
Does the reader support UHS-II microSD cards?
The reader supports UHS-I cards. UHS-II cards will work but will be limited to UHS-I transfer speeds.
Does it require any driver installation?
No, the MobileMate reader is plug-and-play on most modern operating systems without additional drivers.