Question 1

What's the difference A1 A2 ?

Accepted Answer

A1 read speed is up to 100mb/s while A2 is at up to 160mb/s, write speed for both is at 90mb/s. A2 is also optimized for cell phone applications.

Question 2

Is this product counterfeit? if i order and try to register it on sandisk’s website for use with recoverypro, will it be accepted?

Accepted Answer

Your concerns are valid in light of the fact that on a popular product bidding site (rhymes with "flea") it was once estimated that 95% of all memory offered on the site were counterfeits. Amazon is not off the hook either. I have seen sellers posting memory at ridiculous prices, such as a 1TB unknown-brand microSD card for $50.

Assuming you are not able to perform card tests, here's how I buy memory:

- I buy ONLY FROM ESTABLISHED sellers (defined as a seller who specializes only in card products, has hundreds of five star ratings, has a history of good comments and reviews, and has a no-questions-asked return policy).

- I now buy ONLY the brand names. Samsung, SanDisk, PNY, Kingston, etc. (stick to the brand names, that's half the battle won).

- When you get the card check closely for evidence of repackaging (soiled card, fingerprints or smudges, factory seal broken, etc.) If you see such evidence, send the card back.

- Assuming you know how to check the card "properties" on your computer or phone, so that. Counterfeiters can fool this system, but it is better than nothing.

- Finally, perform a few tests: 1) transfer files TO the card, that's testing the write speed. Windows will show you the transfer/write rate. Assuming there's no bottlenecks in your card reader or on the PC, you should see transfer speeds close to what's claimed on the package and website ad; and 2) transfer files from the card to the PC. See how fast a transfer or "upload" takes.

- Finally, use a FREE (German) program called "h2testw" that works on MS Windows (has an English language option when you open it). That will test all elements of your card. Pop the card into the reader, connected to your PC, open h2testw and test away.

Question 3

Can this handle 60 fps 4k?

Accepted Answer

Yes, It does 4K 60fps with no issues. I use it in my GoPro Hero 6 and have never had issues. Also works great for 2.7K 120fps.

Question 4

Does the 1tb card work on Nintendo Switch?

Accepted Answer

Yes, the 1TB SanDisk "Extreme" card works on the Switch. All sizes and speeds of MicroSD, up to 2TB (whenever those get made), will work. Nintendo recommends a speed of at least Class 10 and UHS-I, though.

That being said, the Switch's MicroSD card reader can only read at speeds up to 104MB/s. The "Extreme" and "Extreme Pro" cards are rated up to 160MB/s and 170MB/s, respectively. The Switch also cannot take advantage of the "A2" and "V30" specs, so buying the *fastest* card isn't necessarily the best option.

The cheaper SanDisk "Ultra" cards (rated up to 120MB/s) will work perfectly fine, leave enough comfortable overhead for the speed, and save you money.

Other reputable MicroSD card brands are: Kingston, Lexar, PNY, and Samsung.

Special Feature	Lightweight
Read Speed	160 Megabytes Per Second
Product Dimensions	1D x 15W x 11H mm
Item Weight	0.01 Pounds
Write Speed	90.0
Hardware Interface	microSDXC
Secure Digital Association Speed Class	Class 10
Manufacturer	SanDisk
UPC	619659169732
Global Trade Identification Number	00619659169732
Item model number	SDSQXA1-256G-GN6MA
Is Discontinued By Manufacturer	No
Item dimensions W x H	1 x 15 x 11 mm
RAM Size	256 GB
Memory Clock Speed	160 Megabytes Per Second
Are Batteries Included	No
Lithium Battery Energy Content	1 Watt Hours
Lithium Battery Packaging	Batteries contained in equipment
Lithium Battery Weight	1 g
Number Of Lithium Ion Cells	1
Nombre de cellules Lithium-Métal	5
Item Weight	4.54 g

SanDisk 256 GB Extreme micro SDXC A2 SDSQXA1-256G [International Package].

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