Nov 6, 2017
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Sandisk Ultra 400GB Micro SDXC UHS-I A1-Rated Card Review

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After Android marshmallow OS release in 2015, we can do even more with our microSD cards including running apps directly from the card to free up device memory for other tasks. The demand of application memory expansion becomes even stronger with the introduction of Android’s Adoptable Storage Device capability. There is a growing need for a combination of random and sequential performance levels improvement.

The Sandisk Ultra 400GB Micro SDXC UHS-I already meet the App Performance Class 1 or A1 and we will show you why A1 class is important for storage card these days. Generally, we couldn’t easily tell by looking at our card if it could also run apps that’s why the Application Performance Class can help us to find a card for running apps without slow and sluggish.

The Application Performance Class 1 (A1) was defined by SD Physical 5.1 specification. Not only for storing maps, pictures, videos, music, dictionary and documents, it also enables user to be freed form sluggish for editing and updating data. Cards displaying the app performance level 1 or A1 symbol offer minimum random read input/output access per second of 1500, write IOPS of 500 and sustain sequential speeds of at least 10 megabytes per second.

The 400GB SanDisk Ultra microSDXC UHS-I card is the highest-capacity microSD card on the market right now. It not only gives you the freedom to shoot, save and share more than ever before. With transfer speeds of up to 100MB/s, you content will move fast plus A1-rated performance optimized for apps, delivering faster app launch and performance that provides a better smartphone experience. Ideal for Android Smartphones and Tablets.

It not only make your phone or tablet ran app faster, this 400GB SanDisk Ultra also work with Nintendo Switch too. You will deliver huge storage for your games plus faster game loading speed. It requires system update in order to use microSDXC with your Nintendo Switch.

Nintendo Switch with microSDXC card

Nintendo Switch with microSDXC card

Sandisk Ultra 400GB Micro SDXC UHS-I with A1-rated is optimized for running apps, delivering faster app launch alongside with breakthrough capacity of 400GB. If you looking for better speed plus huge storage, this card is best for you.

Key features

  • Up to 400GB to store even more hours of Full HD video7
  • Class 10 for Full HD video recording and playback2
  • Up to 100MB/s transfer speeds let you move up to 1200 photos in a minute6
  • Load apps faster with A1-rated performance1. Durability-shockproof, temperature extremes, waterproof, x-ray proof
  • Ideal for Android smartphones and tablets, and MIL cameras

Sandisk Ultra 400GB Micro SDXC UHS-I Card with Adapter – SDSQUAR-400G-GN6MA

SaleBestseller No. 1
Sandisk Ultra 200GB Micro SDXC UHS-I Card with Adapter - 100MB/s U1 A1 - SDSQUAR-200G-GN6MA
638 Reviews
Sandisk Ultra 200GB Micro SDXC UHS-I Card with Adapter - 100MB/s U1 A1 - SDSQUAR-200G-GN6MA
  • Ideal for Android-based smartphones and tablets
  • Transfer speeds of up to 100MB/s**
  • Rated A1 for faster app performance3 and UHS Speed Class U1 and Speed Class 10 for Full HD video recording and playback1
  • Shockproof, temperature-proof, waterproof, and X-ray-proof2
SaleBestseller No. 2
Sandisk Ultra 64GB Micro SDXC UHS-I Card with Adapter - 100MB/s U1 A1 - SDSQUAR-064G-GN6MA
638 Reviews
Sandisk Ultra 64GB Micro SDXC UHS-I Card with Adapter - 100MB/s U1 A1 - SDSQUAR-064G-GN6MA
  • Ideal for Android-based smartphones and tablets
  • Transfer speeds of up to 100MB/s**
  • Rated A1 for faster app performance3 and UHS Speed Class U1 and Speed Class 10 for Full HD video recording and playback1
  • Shockproof, temperature-proof, waterproof, and X-ray-proof2
SaleBestseller No. 3
Sandisk Ultra 128GB Micro SDXC UHS-I Card with Adapter - 100MB/s U1 A1 - SDSQUAR-128G-GN6MA
638 Reviews
Sandisk Ultra 128GB Micro SDXC UHS-I Card with Adapter - 100MB/s U1 A1 - SDSQUAR-128G-GN6MA
  • Ideal for Android-based smartphones and tablets
  • Transfer speeds of up to 100MB/s**
  • Rated A1 for faster app performance3 and UHS Speed Class U1 and Speed Class 10 for Full HD video recording and playback1
  • Shockproof, temperature-proof, waterproof, and X-ray-proof2
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