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Western Digital unveils a 400GB SanDisk Extreme microSDXCT card

400GB SanDisk Extreme

During the Mobile World Congress event in Barcelona at the end of last month, Western Digital unveiled their new 400GB SanDisk Extreme UHS-I microSDXCT card. Due to its impressive specifications, it can entitle itself as the world’s fastest UHS-I flash memory card.


Talking of specifications, the most exciting one is probably the one deciding the speed of the new 400GB SanDisk Extreme card. It can read files up to an astonishing 160MB/s and write files up to 90MB/s.

It also meets the requirements of the Application Performance Class 2 (A2) meaning it’s speeding up your device significantly when it comes to launching applications etc.

Learn everything in terms of speed classes, sizes, and capacities of SD cards to find out How to choose the right SD card.


Just as it’s predecessors the new addition to the SanDisk Extreme line-up is a tough memory card. Besides being shockproof, waterproof and X-ray-proof it’s also able to operate between the temperatures -13ºF to 185ºF alternatively -25ºC to 85ºC. The temperatures for the ability to store files stretch to an even further -40ºF to 185ºF (-40º to 85ºC).

400GB SanDisk Extreme

The 400GB SanDisk Extreme UHS-I microSDXCT card is both durable and fast.


The 400GB SanDisk Extreme microSDXC UHS-I card brings endless possibilities for use in mobile devices that are used in all kinds of environments.

Except for being an ideal choice for improving the memory on your daily driver, the card also easily store video recorded in 4K Ultra HD making it future-safe for the upcoming standard.

Furthermore, Western Digital provides purchasers of the new card with the data recovery software RescuePRO Deluxe making it easy to recover lost files.

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