Ackmioxy 32GB Extreme microSDHC UHS-I memory card

32 GB microSDHC for action cameras

The Ackmioxy 32 GB Extreme microSDHC card targets creators who need reliable storage for 4K footage on drones, action cams or gimbal cameras. Its UHS-I interface and U3, V30 ratings guarantee the sustained write speeds those devices demand. The bundled SD adapter lets the same card work in full-size slots without extra purchases.

UHS-I bus caps peak throughput at 100 MB/s

The UHS-I standard limits maximum read performance to 100 MB/s, so sustained writes sit below that ceiling. V30 certification ensures at least 30 MB/s continuous write, which covers 4K capture but leaves no headroom for 8K or high-bitrate ProRes workflows. A2 rating helps app load times but cannot overcome the bus bottleneck.

Simple drop-in install; watch for fake capacity

Insert the card, format in the host device, then verify the reported capacity matches 32 GB. Counterfeit cards often misreport larger sizes and corrupt data once the real limit is passed. Keep the adapter contacts clean and avoid removing the card while the write LED is active.