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Ackmioxy

Ackmioxy 256GB Extreme microSDHC UHS-I Memory Card

SKU CH-VWCZ-TWKVV

256 GB microSD card rated U3, V30 and A2 for 4K video and fast app performance, includes SD adapter

  • Total capacity256 GB
  • Memory card formatMicroSD
  • Speed classUHS-I
  • League or teamUFC / MMA

Capacity 256G

  • 256GB capacity stores extensive 4K footage and high-resolution photos
  • Up to 100MB/s read speed enables rapid file transfers and smooth playback
  • U3, V30, A2 ratings guarantee sustained performance for 4K video recording
  • Includes adapter for broad compatibility with cameras, drones, and action cams
  • Engineered for durability in demanding environments and intensive workloads

High-capacity microSD for action cameras

The Ackmioxy 256GB Extreme microSDHC UHS-I card provides expansive storage for high-resolution photos and 4K video. It is built for professionals and enthusiasts using DJI drones, Osmo series, Insta360, GoPro, and mirrorless cameras from Canon, Nikon, and Sony. The A2 rating supports rapid app loading on compatible devices.

Simple installation with included adapter

Insert the microSD card directly into your device slot or use the supplied full-size SD adapter for readers and cameras that require it. The card is pre-formatted and ready to use. The most common issue is accidentally engaging the adapter's write-protect switch, which prevents recording until slid back.

Verify device capacity and speed requirements

Confirm your camera or drone accepts microSDXC cards up to 256GB and supports UHS-I speeds with U3 and V30 ratings for 4K capture. Check that the host device can leverage the A2 application performance class if you plan to run apps from the card. Older hardware limited to 32GB or lower speed classes will not work correctly.

How it compares

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

Price $41.99
Typical for this category: the median of 1,947 items is $46.99.
Total capacity 256 GB
Higher than about 80% of the 1,132 comparable items (median 64 GB).
Price per TB $164.02 per TB
Cheaper than about 89% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameByteuni
Product lineExtreme
Total capacity256 GB
Performance
Speed classUHS-I
Storage
Memory card formatMicroSD
More details
League or teamUFC / MMA

Other versions of this model

5 more in the same range

Questions about this item

How do I verify the card is performing at its rated U3 and V30 speeds after setup?

Run a benchmark tool such as CrystalDiskMark or Blackmagic Disk Speed Test; sustained write results should meet or exceed 30 MB/s to confirm U3 and V30 operation.

What is included in the package and what must be purchased separately?

The pack contains one 256 GB microSD card and a full-size SD adapter; no card reader or other accessories are supplied.

Which capacity from the lineup should I choose for 4K video on my action camera?

Available capacities are 32 GB, 64 GB, 128 GB, 256 GB, 512 GB, 1 TB and 2 TB; 256 GB holds roughly 360 minutes of 4K footage, while 512 GB doubles that runtime.

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