We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Red microSD card with SD adapter on white background

SanDisk

SanDisk Extreme 256GB MicroSDHC UHS-I 160MB/s U3 V30 A2

SKU CH-8ZKS-W5PP5

256 GB microSD card rated U3, V30 and A2 for 4K UHD video and fast app loading on Android, action cameras and drones

  • Card typeMicroSD
  • TypeMicroSD
  • Capacity256GB
  • Read Speedup to 100 MB/s
  • Write Speedup to 60 MB/s
  • OptionN/A

Capacity 256GB

  • Fast 160MB/s read speed for quick file transfers
  • 90MB/s write speed enables smooth 4K UHD recording
  • A2 rated 4000 read IOPS for faster app loading
  • Built temperature-proof water-proof shock-proof x-ray-proof
  • Includes adapter for broad device compatibility

Capacity & Speed

This 256GB MicroSD card delivers read speeds up to 160MB/s and write speeds up to 90MB/s. It carries UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings for 4K UHD recording. The A2 rating provides 4000 read IOPS and 2000 write IOPS for faster app loading on Android devices.

Ideal Uses & Limits

Suited for action cameras, drones, and Android smartphones needing sustained 4K video capture and quick file transfers. The card is temperature-proof, water-proof, shock-proof, and x-ray-proof for harsh environments. Not suitable for devices limited to 32GB maximum capacity or those requiring UHS-II or V60/V90 speed classes for higher bitrate workflows.

Deciding Specification

The U3 and V30 ratings guarantee a minimum sustained write speed of 30MB/s, which is the threshold for reliable 4K UHD video recording. If your device or workflow demands a higher guaranteed minimum write speed, this card will not meet that requirement.

Highlights

  • Fast 160MB/s read speed for quick file transfers
  • 90MB/s write speed enables smooth 4K UHD recording
  • A2 rated 4000 read IOPS for faster app loading
  • Built temperature-proof water-proof shock-proof x-ray-proof
  • Includes adapter for broad device compatibility

Specifications

BrandSanDisk
Card typeMicroSD
SeriesSDSQXAF-032G-GN6MA
ModelSDSQXAF-032G-GN6MA
Part NumberSDSQXAF-032G-GN6MA
TypeMicroSD
Capacity256GB
Read Speedup to 100 MB/s
Write Speedup to 60 MB/s
OptionN/A

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How much power does the 256GB SanDisk Extreme MicroSD card draw when recording 4K video all day?

The card operates from the host device's slot power; it has no separate power draw specification beyond the UHS-I bus limits.

What host device or adapter must I already own for this MicroSD card to work?

You need a device with a MicroSDXC slot supporting UHS-I, or the included full-size SD adapter for standard SD slots.

Will the A2-rated 256GB card run at its 160MB/s read speed in an older camera that only supports UHS Speed Class 1?

The card will fall back to the host's maximum UHS-I speed; U3 and V30 ratings guarantee 30MB/s minimum write, but peak 160MB/s read requires a UHS-I host capable of that throughput.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.