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SanDisk 32GB microSDHC card with microUSB OTG reader

SanDisk

SanDisk 32GB microSDHC Extreme Pro 95MB/s UHS-I U3 Class 10 633X with microUSB OTG USB 2.0 Reader

SKU CH-A6XN-VJHE2

A 32 GB microSDHC card rated Class 10 UHS-I U3 with up to 95 MB/s read and 90 MB/s write, bundled with a microUSB OTG USB 2.0 reader

  • Total capacity32 GB
  • Speed classClass 10 UHS-I U3
  • Max read speedup to 95 MB/s
  • Write throughputup to 90 MB/s
  • Product typeMicroSDHC
  • 32 GB capacity stores hours of 4K video
  • Read speeds up to 95 MB/s transfer files quickly
  • Write speeds up to 90 MB/s capture burst photos smoothly
  • UHS-I U3 Class 10 rating guarantees sustained 4K recording
  • Included microUSB OTG 2.0 reader connects directly to phone

Capacity and speed class

This SanDisk Extreme Pro microSDHC card delivers 32GB of storage with a Class 10 UHS-I U3 rating. Read speeds reach up to 95MB/s and write speeds up to 90MB/s. The bundle includes a microUSB OTG USB 2.0 reader for direct connection to compatible devices. An SD adapter is also supplied for use in standard card slots.

Best for mobile 4K capture; not for larger libraries

The U3 speed class supports 4K video recording on phones, tablets and action cameras that accept microSDHC media. The OTG reader lets you offload footage to a USB OTG-capable smartphone or tablet without a computer. Buyers who need more than 32GB of capacity should consider a higher-capacity card. Devices limited to standard SDHC speeds will not benefit from the UHS-I bus.

UHS-I U3 speed class

The single specification that decides suitability is the UHS-I U3 rating, which certifies the card for sustained 4K video capture. If your device requires this speed class, the card meets it. If the device only supports lower speed classes, the extra headroom goes unused.

How it compares

Measured against everything we stock in SD & MicroSD Memory Cards, at today’s prices. Recalculated every night.

Price $28.99
Cheaper than about 66% of the 1,947 comparable items (median $46.99).
Total capacity 32 GB
Lower than about 70% of the 1,132 comparable items (median 64 GB).
Price per TB $905.94 per TB
Pricier than about 82% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Total capacity32 GB
Product typeMicroSDHC
Performance
Speed classClass 10 UHS-I U3
Max read speedup to 95 MB/s
Write throughputup to 90 MB/s

Questions about this item

How do I install the microSDHC card and the microUSB OTG reader, and what step do people often get wrong?

Insert the 32GB microSDHC card into the reader, then plug the reader into a device that supports USB OTG. The common mistake is using the reader on a phone or tablet that lacks OTG support.

What maintenance or replacement will the card and reader need over time?

The card has no moving parts and requires no scheduled maintenance. Replace it if write speeds drop below the rated 90MB/s or if the device reports read errors.

What limit appears first during sustained heavy use of the card?

Sustained write throughput is capped at up to 90MB/s, which will be reached before the 95MB/s read ceiling during continuous recording or large file transfers.

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