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Blue microSDXC card with black SD adapter and blue USB 3.2 Type-A reader

Lexar

Lexar BLUE 633x 256GB microSDXC UHS-I Card with SD Adapter & USB 3.2 Gen 1 Reader

SKU CH-DMK7-MEW4G

256GB microSDXC card with SD adapter and USB 3.2 Gen 1 reader, UHS-I Class 10 rated for 1080p and 4K capture

  • 256GB capacity stores extensive 4K footage without constant offloading
  • Read speeds up to 100MB/s accelerate large file transfers
  • Write speeds up to 45MB/s sustain smooth 1080p and 4K recording
  • Included USB 3.2 Gen 1 reader enables rapid offload to any PC
  • SD adapter broadens compatibility across cameras, drones and laptops

What you get in the bundle

The package supplies a 256GB microSDXC card rated at 633x, a full-size SD adapter and a USB 3.2 Gen 1 Type-A reader. It is aimed at anyone who needs immediate extra capacity for phones, tablets, action cameras or drones without buying separate accessories.

Upgrade path from slower cards

The card delivers read speeds up to 100MB/s and write speeds up to 45MB/s, a clear step up from basic Class 10 media that tops out around 10MB/s. The jump is worthwhile when you record 1080p or 4K video and want shorter buffer clears and faster offloads to a computer.

Best fit and limits

This suits creators who want one kit that works across multiple devices and value the bundled reader for quick USB transfers. Buyers who need sustained write rates above 45MB/s for high-bitrate 4K or professional workflows should look at higher-speed UHS-II or V-rated alternatives.

Highlights

  • 256GB capacity stores extensive 4K footage without constant offloading
  • Read speeds up to 100MB/s accelerate large file transfers
  • Write speeds up to 45MB/s sustain smooth 1080p and 4K recording
  • Included USB 3.2 Gen 1 reader enables rapid offload to any PC
  • SD adapter broadens compatibility across cameras, drones and laptops

Specifications

No published specifications for this item yet.

Questions about this item

Does the 256GB microSDXC card fit directly into a full-size SD slot or do I need the included adapter?

The card is microSDXC size so it requires the supplied SD adapter to work in a full-size SD slot.

What is the correct way to insert the card into the USB 3.2 Gen 1 Type-A reader so the contacts align?

Slide the microSD card into the reader with the gold contacts facing the label side until it clicks, then plug the reader into a USB-A port.

When should I consider replacing the 256GB card if write speeds drop below the rated 45MB/s during 4K recording?

Replace the card if sustained write performance falls under 45MB/s or if the card reports errors, as this indicates wear on the NAND cells.

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