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A small rectangular SD memory card with a red and black label showing 128GB capacity

SanDisk

SanDisk Extreme SD UHS-I Card 128GB memory card

SKU CH-M0KN-CAN1R

128 GB SDXC card with read speeds up to 180 MB/s and write speeds up to 130 MB/s for 4K UHD video and burst photography

  • Expansive 128GB capacity stores vast high-resolution photos and 4K UHD video
  • Read speeds up to 180MB/s with QuickFlow Technology accelerate media offloads
  • Write speeds up to 130MB/s capture fast action without missing a beat
  • UHS-I U3 and V30 ratings guarantee smooth, uninterrupted 4K UHD recording
  • Built to withstand weather, water, shocks and harsh conditions for reliable use anywhere

SanDisk Extreme SD UHS-I 128GB

The SanDisk Extreme SD UHS-I Card 128GB is a high-performance SDXC memory card built for photographers and videographers who need reliable storage for high-resolution images and 4K UHD video. It uses the UHS-I interface and carries U3 and V30 speed ratings to sustain the write performance required for continuous recording. The card is rated to withstand weather, water, shock and other harsh conditions encountered in the field.

Suited for 4K video and burst photography

This card suits creators capturing 4K UHD video or shooting sequential burst-mode photography where sustained write speed prevents dropped frames. It also benefits professionals who need fast offloads to keep post-production workflows moving. Users who only store documents, standard-definition media or occasional JPEG snapshots will not use the available performance and should consider a lower-specification card.

U3 and V30 sustained write rating

The decisive specification is the UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) rating, which guarantees a minimum sequential write speed of 30MB/s. This threshold is what allows uninterrupted 4K UHD recording and reliable burst capture on compatible cameras. Without this rating a card cannot sustain the data rate those modes demand.

Highlights

  • Expansive 128GB capacity stores vast high-resolution photos and 4K UHD video
  • Read speeds up to 180MB/s with QuickFlow Technology accelerate media offloads
  • Write speeds up to 130MB/s capture fast action without missing a beat
  • UHS-I U3 and V30 ratings guarantee smooth, uninterrupted 4K UHD recording
  • Built to withstand weather, water, shocks and harsh conditions for reliable use anywhere

Specifications

No published specifications for this item yet.

Questions about this item

Does the 128 GB SDXC card fit a standard full-size SD slot?

Yes, it uses the standard SDXC form factor so it fits any full-size SD slot that supports SDXC capacity.

What is the correct way to insert the card and the step users often miss?

Insert the card label-side up with the metal contacts entering the slot first until it clicks; the step often missed is pushing it in far enough to latch.

How do I know when this card should be replaced?

Replace it if you see corrupted files, the camera reports card errors, or write speeds drop noticeably during 4K UHD recording.

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