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Sandisk

SANDISK 256GB Extreme microSDXC UHS-I Memory Card with Adapter - C10, U3, V30, 4K, 5K, A2, Micro SD Card - SDSQXAV-256G-GN6MA

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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Aug 2
Order within 14 hours and 9 minutes
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Style: Old Version


Capacity: 256GB


Features

  • Compatible with Nintendo-Switch (NOT Nintendo-Switch 2)
  • Save time with card offload speeds of up to 190MB/s powered by SanDisk QuickFlow Technology (Up to 190MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes. SanDisk QuickFlow Technology is only available for 64GB, 128GB, 256GB, 400GB, 512GB, and 1TB capacities. 1GB=1,000,000,000 bytes and 1TB=1,000,000,000,000 bytes. Actual user storage less.)
  • Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately), Compatible with microSDHC, microSDXC, microSDHC UHS-I, and microSDXC UHS-I supporting host devices
  • Up to 130MB/s write speeds for fast shooting (Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes.)
  • 4K and 5K UHD-ready with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (Compatible device required. Full HD (1920x1080), 4K UHD (3840 x 2160), and 5K UHD (5120 X 2880) support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site. UHS Speed Class 3 (U3) designates a performance option designed to support real-time video recording with UHS-enabled host devices. Video Speed Class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS-enabled host devices. See the SD Associations official website.)
  • Rated A2 for faster loading and in-app performance (A2 performance is 4000 read IOPS, 2000 write IOPS. Results may vary based on host device, app type and other factors)

Description

The SanDisk Extreme microSDXC memory card lets you save time transferring media with read speeds of up to 190MB/s(1) powered by SanDisk QuickFlow Technology(2). Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately). With write speeds up to 130MB/s(1) it’s ideal for your Android smartphone, action cameras, or drones. This high- performance microSD card handles 4K and 5K UHD video recording, Full HD video(3), and high-resolution photos. | (1)Up to 190MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Up to 130MB/s write speeds. Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes. (2)SanDisk QuickFlow Technology is only available for 64GB, 128GB, 256GB, 400GB, 512GB, and 1TB capacities. [1GB=1,000,000,000 bytes and 1TB=1,000,000,000,000 bytes.] Actual user storage less. (3)Compatible device required. Full HD (1920x1080) and 4K UHD (3840 x 2160), and 5K UHD (5120 X 2880) support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site.

Brand: Sandisk


Model Name: SanDisk Extreme microSD UHS-I Card with Adapter


Flash Memory Type: Micro SDXC


Memory Storage Capacity: 256 GB


Compatible Devices: Action Cameras, Digital Cameras, Drones, Smartphone, Tablet


Flash Memory Type: Micro SDXC


Memory Storage Capacity: 256 GB


Compatible Devices: Action Cameras, Digital Cameras, Drones, Smartphone, Tablet


Additional Features: Temperature Proof, Water Proof, X Ray Proof


Read Speed: 190 megabytes_per_second


Media Speed: 130 MB per second


Hardware Connectivity: microSDXC


Secure Digital Association Speed Class: Class 10


Flash Memory Video Speed Class: 30


Item Weight: 10 g


Item Dimensions L x W: 0.4"L x 0.5"W


Warranty Type: Limited Lifetime


Brand: Sandisk


Model Name: SanDisk Extreme microSD UHS-I Card with Adapter


Model Number: SDSQXAV-256G-GN6MA


Manufacturer: Sandisk Technologies, Inc.


UPC: 619659188504


Global Trade Identification Number: 04


Unit Count: 1 Count


Mfr Part Number: SDSQXAV-256G-GN6MA


Warranty Description: Lifetime limited manufacturer warranty


Color: Gold/Red


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Fast, Reliable, and Perfect for Cameras for all content creators
Style: Old Version Capacity: 256GB
I purchased this SanDisk 256GB Extreme microSD card to use with my mirrorless cameras and my DJI Osmo Pocket 3, and it has performed flawlessly. The read and write speeds are fast, making it easy to record high-quality video and capture photos without worrying about dropped frames or slow transfers. The card has been very reliable, and I haven’t experienced any issues during recording or while transferring files to my computer. The included SD adapter is also a nice bonus for quickly accessing files on different devices. Overall, this is an excellent memory card for photographers and videographers. I definitely recommend it if you need a fast and dependable microSD card. I’ll be ordering more in the future for my other cameras and equipment. ... show more
Reviewed in the United States on July 4, 2026 by Miguel Saenz
    • A Choice All The Pro's Make...
Style: Old Version Capacity: 128GB
Review Image by James Bond
Sandisk is a gold standard of memory cards for all sort of devices and a brand that I have trusted over the decades to handle my pictures and video. The 128GB is sufficient for my Osmo Pocket 3 and Action 5 Pro cameras and works well with GoPro's and other cameras upto 4K that use this card slot. These work best when plugged in directly but the included SD Sled is also possible to use in cameras with the large slot size. This is not the fastest card they make, but it probably is the middle upper one you should have. The Extreme Pro's tend to cost a bit more and are a bit faster in the write speed, which can help in some cameras when shooting very dynamic motion shots like sports, etc. As an everyday use card, these hold up much better than the SD versions and usually live in the camera on a permanent basis, as I access the files through apps or software removing the need to handle the card too much. If you need a middle ground well made and reliable micro SD card, let it be Sandisk, let is be this one. ... show more
Reviewed in the United States on May 21, 2026 by James Bond
    • Elevate Your Storage Game with SanDisk 256GB Extreme microSDXC Memory Card
Style: Old Version Capacity: 256GB
In the ever-evolving landscape of digital storage solutions, the SanDisk 256GB Extreme microSDXC Memory Card stands out as a true game-changer, delivering unparalleled performance, reliability, and versatility. As an avid photographer and videographer, I've come to rely on this memory card for storing and transferring my precious memories with ease and peace of mind. Here's why the SanDisk Extreme microSDXC deserves a spot in your digital arsenal: First and foremost, let's talk about speed. With read speeds of up to 190MB/s and write speeds to match, this memory card is a speed demon, ensuring lightning-fast data transfer and seamless performance, even when dealing with large files such as 4K videos and high-resolution photos. Whether you're capturing fast-action shots or recording cinematic footage, the SanDisk Extreme microSDXC keeps up with your creative endeavors without missing a beat. Moreover, the Class 10, UHS-I, U3, and V30 ratings signify top-tier performance and reliability, making this memory card an ideal choice for demanding applications such as 4K video recording and burst-mode photography. The V30 video speed class ensures smooth, uninterrupted video capture, while the U3 rating guarantees sustained write speeds for consistent performance in high-resolution recording scenarios. In addition to its impressive speed and performance, the SanDisk Extreme microSDXC is also built to withstand the elements, thanks to its durable construction and advanced engineering. The memory card is shockproof, temperature-proof, waterproof, and X-ray-proof, providing peace of mind that your precious data remains safe and secure, even in the most challenging environments. The included adapter adds to the card's versatility, allowing seamless compatibility with a wide range of devices, including smartphones, tablets, action cameras, drones, and more. Whether you're expanding the storage capacity of your smartphone or capturing breathtaking aerial footage with your drone, the SanDisk Extreme microSDXC offers universal compatibility and hassle-free usage. Furthermore, SanDisk's reputation for quality and reliability is second to none, backed by years of experience and innovation in the field of digital storage. The Extreme microSDXC memory card is rigorously tested to meet the highest standards of performance and durability, ensuring that it consistently delivers exceptional results, time after time. In conclusion, the SanDisk 256GB Extreme microSDXC Memory Card with Adapter is a must-have accessory for anyone who demands top-tier performance, reliability, and versatility from their digital storage solution. Whether you're a professional photographer, videographer, or enthusiast, this memory card offers the speed, capacity, and durability to support your creative endeavors and capture life's precious moments in stunning detail. Highly recommended for anyone seeking a premium storage solution that goes above and beyond expectations. ... show more
Reviewed in the United States on April 1, 2024 by francis a benning jr
    • Good for gaming
Style: Old Version Capacity: 2TB
Works as expected. Put it in my ROG Ally X. Hasn’t burnt up playing demanding games. Worth it!
Reviewed in the United States on June 25, 2026 by Caydn Quinn
    • Massive Storage, Fast Performance 💾✨
Style: Old Version Capacity: 512GB
This card is a solid choice if you need reliable, high-capacity storage. With 512GB, there’s plenty of space for photos, videos, apps, and more without constantly worrying about running out. The performance is fast and smooth, making it great for 4K video recording, cameras, drones, or even expanding phone storage. It feels dependable, and you can trust it to handle larger files without slowing things down. High capacity, strong performance, and a great option when you need space and speed 👍✨ ... show more
Reviewed in the United States on April 19, 2026 by Adriana R.
    • High Quality Videos
Style: Old Version Capacity: 256GB
Added this to a dash cam and it works great. High quality videos and lots of storage capacity.
Reviewed in the United States on July 6, 2026 by Jay
    • Great memory card
Style: Old Version Capacity: 2TB
Byte Tax is 140GB, you get 1.86TB usable, card reads fast is is great for just about any application, and is Plug & Play...PC instantly recognizes it and is straight ready to use without additional formatting.
Reviewed in the United States on June 21, 2026 by D. Gutridge
    • I trust Sandisk
Style: Old Version Capacity: 128GB
Great microSD. Works perfectly for everything I use it for. Very easy to use.
Reviewed in the United States on July 2, 2026 by Ethan

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