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SANDISK 256GB Ultra microSD UHS-I Card - Up to 195MB/s Read Speed, Full HD Video, V10, U1, C10, A4 - SDSQUJQ-256G-GZ6MA

  • Ultra® 64GB
  • Ultra® 128GB
  • Ultra® 256GB
  • Ultra® 512GB
  • Ultra® 1TB
  • Ultra® 1.5TB
  • Extreme® 64GB
  • Extreme® 128GB
  • Extreme® 256GB
  • Extreme® 512GB
  • QuickFlow™ Card Reader
  • Read Speed Up to 195MB/s
  • UHS-I
  • 256GB
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Overview
Specs
Reviews
SanDisk Ultra 256GB MicroSD Memory Card
SanDisk Ultra 256GB MicroSD Memory Card
SanDisk Ultra 256GB MicroSD Memory Card
SanDisk Ultra 256GB MicroSD Memory Card
Welcome to the SANDISK App(5)

Easily back up, organize, and transfer your photos and videos with the SANDISK App.

SanDisk Ultra 256GB MicroSD Memory Card
Extensively Tested, Built to Last

SANDISK branded cards are tested with a broad range of devices to help ensure they work flawlessly with any compatible product. Proprietary flash management techniques(8) help deliver industry-leading in-house produced NAND.

(1) 1GB=1,000,000,000 bytes. 1TB=1,000,000,000,000 bytes. Actual user storage less.

(2) [128GB-1.5TB] Up to 195MB/s read speed, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speed. Write speeds lower. Based on internal testing; performance may be lower depending on host device, interface, usage conditions, and other factors. 1MB=1,000,000 bytes. [for 64GB] Up to 145MB/s read speed, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speed. Write speeds lower. Based on internal testing; performance may be lower depending on host device, interface, usage conditions, and other factors. 1MB=1,000,000 bytes. [for 32GB] Up to 125MB/s read speed, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speed. Write speeds lower. Based on internal testing; performance may be lower depending on host device, interface, usage conditions, and other factors. 1MB=1,000,000 bytes.

(3) A1 performance is 1500 read IOPS, 500 write IOPS. Based on internal testing. Results may vary based on host device, app type, and other factors.

(4) Full HD (1920x1080) video support may vary based upon host device, file attributes, and other factors. See official Sandisk website.

(5) Download and installation required. See official SANDISK Memory Zone page on Sandisk website.

(6) Reader sold separately.

(7) Approximations; results may vary based on based on host device, file attributes and other factors. For Full HD video: Based on 1920x1080 Full HD at 30fps (320MB/min). For Slow Motion Full HD video: Based on 1920x1080 Full HD at 60fps (783MB/min). For Photos: Based on a 22 MP JPEG image with an average file size of 6.5MB. For Audio Files: Based on 96KHz 24-bit Audio (20.62MB/minute). For Movies: Based on a 2-hour Full HD movie with an average file size of 6GB. For Podcasts: Based on 128kbps Audio, Standard MP3 (1MB/minute). For Games: Based on average game size of 465MB each.

(8) See Western Digital White Paper- Flash 101 and Flash Management. A detailed overview of flash and flash management (August 2018).

(9) Speeds vary by product and capacity. Based on internal testing; performance may be lower depending upon host device, usage conditions, and other factors. 1MB = 1,000,000 bytes.

SANDISK, the SANDISK logo, QuickFlow, SANDISK QuickFlow and SANDISK Ultra are registered marks or marks of Sandisk Corporation or its affiliates in the US and/or other countries. The microSD, microSDHC, and microSDXC marks and logos are marks of SD-3C, LLC. Android is a mark of Google LLC. All other marks are the property of their respective owners. Product specifications subject to change without notice. Pictures shown may vary from actual products.

2026 Sandisk Corporation or its affiliates. All rights reserved.

Perfect for 4K UHD video and Sequential Burst Mode PhotographyWith the SanDisk Extreme SD UHS-I memory card save time transferring media with read speeds of up to 180MB/s powered by SanDisk QuickFlow Technology (64GB - 512GB). Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately). With shot speeds of up to 130MB/s and UHS speed Class 3 (U3) recording, you're ready to capture high-resolution, stutter-free 4K UHD video. Plus, it's built to withstand weather, water, shocks, and other less-than-ideal conditions so you can rest assured that it's good to go wherever you go.

Improve your workflow efficiencyWith SanDisk QuickFlow Technology (64GB - 512GB), this card optimizes performance for timesaving media offloads with quick transfer speeds up to 180MB/s. Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately). Shot speeds up to 130MB/sWith shot speeds up to 130MB/s the card is perfect for capturing the action as it happens, without missing a beat. Perfect for 4K UHD videoSometimes speed is what you need. The SanDisk Extreme SD UHS-I card delivers the performance to capture stunning, uninterrupted 4K UHD video. Durability you can count onBuilt for and tested in harsh conditions, the SanDisk Extreme SD UHS-I card is temperature-proof, waterproof, shock-proof, and x-ray-proof.

Recover images you accidentally deletedIncludes an offer for RescuePRO Deluxe data recovery software which lets you restore images you accidentally deleted.

Warranty & Returns

Warranty, Returns, And Additional Information

Return Policies*

  • Return for refund within: 30 days
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  • Read full return policy for details.
  • *Subject to applicable law
  • Warranty Notice:

    This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.
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The SanDisk Ultra 256GB microSDXC UHS-I card adds storage to compatible Android phones and tablets, cameras, and laptops, with A1 app-performance rating and up to 195MB/s read speed when used with a compatible SanDisk QuickFlow reader.

Recommended For

  • Android phone and tablet owners who need extra space for photos, Full HD clips, music, downloads, and some apps; SanDisk positions this A1-rated card for mobile storage and app use.
  • Nintendo Switch, Switch Lite, and Switch OLED owners expanding storage for digital games: Nintendo says these consoles support UHS-I microSD cards, and Switch players discuss using SanDisk Ultra cards for this purpose.
  • Digital camera users who mainly store photos and record Full HD video on compatible equipment; SanDisk lists cameras and Full HD capture among the card’s intended uses.
  • Laptop users who periodically offload photos and videos and want a card-reader workflow; SanDisk advertises up to 195MB/s read speed with its QuickFlow reader, rather than as a guaranteed speed in every device.

Real-World Use Scenarios

  • When an Android phone or tablet with a microSD slot is running low on space, use the card for photos, videos, music, and downloads; these files stay accessible without taking up as much of the device’s built-in storage.
  • For a compatible camera, use the card to capture Full HD clips and photos on trips or at family events; its V10 rating is suited to Full HD recording, while the camera must support microSDXC cards.
  • If you want movies, music, or documents available without an internet connection, keep them on the card in a compatible tablet or portable music player; playback mainly involves reading the stored files.
  • When moving a large photo or video library to a computer, use a compatible microSD reader to copy files in batches; transfer speed depends on the reader and host device, so the advertised maximum is not guaranteed in every setup.
  • On an Android device that supports running apps from removable storage, the A1-rated card can hold selected apps; app responsiveness will still depend on the device and may not match built-in storage.

Spec Summary

AttributeValue
Best ForAdding 256GB of removable storage to smartphones, tablets, cameras, and personal computers
Capacity And Format256GB microSDXC memory card
Speed RatingsUHS-I with read speeds up to 195MB/s; rated A1, Class 10, U1, and V10
Durability And WarrantyListed as magnetic-, temperature-, water-, X-ray-, and wearout-proof; backed by a 10-year limited warranty
Model IdentifiersSanDisk Ultra; model SDSQUJQ-256G-GZ6MA