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Small black microSD card with SD adapter

Ackmioxy

Ackmioxy 512GB Extreme microSDHC UHS-I memory card

SKU CH-M545-38YV3

High-capacity 512GB microSD card with UHS-I speed class U3 and V30 for 4K video recording

  • Total capacity512 GB
  • Memory card formatMicroSD
  • Speed classUHS-I
  • League or teamUFC / MMA

Capacity 512G

  • 512GB capacity stores extensive 4K footage and high-resolution photos
  • UHS-I interface delivers up to 100MB/s read speed for rapid file transfers
  • U3 and V30 ratings guarantee sustained 30MB/s write for smooth 4K video recording
  • A2 class accelerates app loading and multitasking on compatible devices
  • Includes full-size SD adapter for use in cameras, drones and card readers

Capacity and speed class

The Ackmioxy 512GB Extreme microSDHC UHS-I card delivers 512GB of storage with a UHS-I interface. It carries C10, U3, V30 and A2 ratings, supporting sustained write speeds for 4K video and fast app performance. The bundled adapter allows use in full-size SD slots.

Build integration

The microSD form factor fits action cameras, drones, pocket cinema cameras and mobile devices with a microSD slot. The UHS-I bus works with existing host controllers, so no special hardware is required. The adapter frees up the card for use in laptops or card readers that only accept full-size SD.

Upgrade path

This card replaces lower-capacity microSD cards such as 32GB, 64GB, 128GB or 256GB models when longer recording time or more burst shots are needed. The jump is worth it when current cards fill up during 4K sessions or when app load times feel slow on A1-rated media.

How it compares

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

Price $101.99
Pricier than about 73% of the 1,947 comparable items (median $46.99).
Total capacity 512 GB
Higher than about 90% of the 1,132 comparable items (median 64 GB).
Price per TB $199.20 per TB
Cheaper than about 81% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameByteuni
Product lineExtreme
Total capacity512 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

Will the 100MB/s read speed hold steady during long 4K recording sessions?

The card is rated U3 and V30, which guarantee a minimum sustained write speed of 30MB/s for continuous 4K capture.

Does the card run hot or draw extra power when recording all day?

MicroSD cards have no moving parts and consume very little power, so heat and noise stay negligible during extended use.

What device slot or adapter is required to use this 512GB card?

Your device must accept microSDXC cards up to 512GB; a full-size SD adapter is included for slots that need it.

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