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SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN

SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN

SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN
$ 11.99

Score By Feature

Based on 335,685 ratings
Easy to install
9.38
Storage Capacity
9.49
Value for money
9.09
Durability
8.90
Easy to use
7.78
Easy to recognize
7.86

OveReview Final Score

How Our Score Is Calculated

Product Description

By entering your model number, you can make sure that this fits.
MicroSD card reader that is both compact and durable
Transfer speeds of up to 170 MB/s are possible with UHS-I.
With USB 3.0, you can connect your devices quickly and easily 0 can transfer data up to 10 times faster than USB 2. 0 people have read this (2)
USB 3.0 compatible. USB 2.0 and USB 3.0 are backwards compatible.

Questions & Answers

What makes A1 and A2 so different?

A1 has a read speed of up to 100 MB/s and A2 has a read speed of up to 160 MB/s; both have a write speed of 90 MB/s. A2 is also well-suited to mobile use.

Is this a tenth-grade level?

Yes. At U3, it's actually at least three times more capable than Class 10. The maximum data rate in Class 10 is ten megabits per second (MB/s). For video, a new "U" series has been defined, which extends the old class system. Class 10 and U1 have the same rate. U3 has a bitrate of 30 MB/s. The Extreme is classified as a U3 card.

Is this a phony product? Will my order be accepted if I order it and try to register it on the Sandisk website for use with RecoveryPro?

Yes, this product is genuine; in fact, it is one of the few microSD cards that can be used indefinitely. I've had a 256GB, 128GB, and 512GB for over a year and they've all worked flawlessly. I've deleted over 800GB of data via all three cards that can be restored using a data recovery program, and the speed of transferring and deleting is still flawless and as fast as it was on day one. I bought three Samsung micro sd cards about a year and a half ago, and all three of them became corrupt, despite the fact that I had barely used them. Yes, I bought them from Amazon and yes, I tested them and they passed the sd test, but for some reason, Samsung micro sd cards don't seem to last as long as Sandisk cards:

Is it possible to shoot 4K at 60 frames per second?

Yes, it can shoot in 4K 60fps with no problems; I use it in my GoPro Hero 6 and have never had any problems, and it also works well in 2K. 7K at 120 frames per second.

Selected User Reviews For SanDisk MobileMate USB 3.0 microSD Card Reader- SDDR-B531-GN6NN

The first red flag was when I looked underneath the card: instead of being solid black like every other SD card I've seen, it appeared to be a green circuit board with an odd black square on it
3/5

br>br>The second red flag was the read/write speeds, which were significantly lower than advertised (only 50-100 MB/s). (Write 55 and read in the mid-80s). The third red flag occurred when I attempted to copy data from an older SD card to this one. I was able to obtain approximately 21. It had 5 GB of data on it when it disconnected from my computer. I then took the card out of the computer and reinserted it. I followed Windows' advice and repaired the hard drive. After that, I tried to copy the data again, but it unmounted itself again, as it had done previously. I attempted to repair the drive in the same way, but Windows informed me that it could not be repaired! Is this for real? So much for trying to find a good Black Friday deal. br>br>.

Kylee Ferguson
Kylee Ferguson
| Feb 08, 2021
This review is for the SanDisk Extreme 128GB microSD UHS-I card, which is legit and fast
5/5

Adapter for I Card - SanDisk MobileMate USB 3. 0 offers a transfer rate of 160 MB/s. 0 microSD Card Reader is a device that allows you to read microSD cards from your computer Amazon was the source of my card's shipment and sale. com. Based on the physical appearance of the product I received, the top review for this card would lead you to believe that it is a fake. Using the bundled USB 3. 0, the speed tests and H2testw program appear to indicate that it achieves the advertised speeds and has the correct capacity. In a USB 3. 0 port, there is a 0 card reader. On my Windows 10 desktop PC, there is no port. br>Even if this card is a "fake," it is quite impressive; I'm sure there are some fakes out there, but if you do decide to buy this card, it might be worth performing your own tests before dismissing it as a fake based on appearances alone (assuming it isn't an incredibly obvious fake). br>April 18, 2020 (update after 13 months): The card continues to function flawlessly. I have no complaints, and I'm very pleased with it.

Benson Wade
Benson Wade
| Sep 10, 2021
The read speed advertised is incorrect! According to SanDisk, this is the fastest read UHS-II card on the market
3/5

I'm on the go (160 MB)! Multiple tests on the 128GB show that this claim is false. I put the card to the test on my Surface Pro (2017), Surface GO, and XPS 13 and got only 88mb read and 84mb write speeds at best!! My Samsung Evo 128GB is a good choice. The read and write speeds are faster on the 256GB drive.

Jamir Griffin
Jamir Griffin
| Jul 05, 2021
Lies about the speed of things
3/5

This card is fraudulent, as many other reviewers have stated. "U3" and "A2" are my nemeses! I'm getting 74/66 MB/s read/write, which is slower than my Samsung 128GB U1 microSD. Non- At 6/2 MB/s, sequential writes are terrible. This card may appear to be a good deal at $30, but it isn't. Don't be taken in by the ruse!.

Katherine Holloway
Katherine Holloway
| Mar 15, 2021
It's the only genuine 1TB Micro SDXC card on the market, and it's up to specs
5/5

For a few years now, companies with strange, made-in-China names have been selling "1TB Micro SDXC Memory Cards" on the internet. Jojlon, Winston, or Krrttphffffffffffffffffffffffffffffffffffffff However, until the SanDisk 1TB Micro SD was released this year, every single seller claiming to have a 1TB Micro SD card was lying. If you read the comments section of those items (yes, you can still find the phony, scamming, way-out-of-the-way-out-of-the-way-out-of-the-way out-of-the-way out-of- smaller- than- TODAY, this website is advertising micro SD cards for sale! ), you'll find them brimming with disgruntled customers claiming to have been duped and displaying screenshots of their benchmark software results to back up their claims. Now, as a result of the long history of con artists claiming to sell high-end items on this and similar websites, I suspect that a large number of the tech-savvy are hawking low-capacity microSD cards made in China that are, at best, a tenth of the size of what they claim to be. Today, the item in question will be encountered by the oriented crowd: SanDisk 1TB Extreme microSDKC UHS-II Memory Card I Memory Card (C10, U3, V30, 4K, A2, C10, U3, V30, 4K, A2, C10, U3, V30, 4K, blah, blah, blah). It would be a shame if a significant portion of those considering purchasing this item get cold feet and back out as a result of the aforementioned rampant scamming by sellers advertising *VERY* large capacity microSD cards. br>br>I had serious reservations about the product because I calculated that there was a good chance it was another rip-off by an online con artist. artists off the street For my phone, however, I required a microSD card with a capacity greater than 512GB. I only have about 650GB of high-resolution data on my computer. I like to carry around high-res music (a lot of DSD files, for example) in my phone, so the highest-capacity-capacity-capacity-capacity-capacity-capacity-capacity-capacity-capacity-capacity-capacity-capacity-capacity-capacity-capa There is a microsd card available. The 512GB wouldn't suffice on this occasion. I noticed the 1TB SanDisk on Amazon about a week ago, but it wasn't yet available for purchase. Then, a few days ago, it became officially available for purchase, and I immediately paid the $450 and chose FREE One-Day Shipping thanks to Prime. It will be delivered the next business day. br>br>The next day, after receiving it in the mail, I immediately plugged it into a USB 3. 0 port using the USB adapter that came with it. 0 slot on my laptop and ran CrystalDiskMark6, then ATTO Disk Benchmark, one by one, to test the capabilities of this microSD card, which boasted read speeds of 160MB/s and write speeds of 90MB/s, according to the card's manufacturer. I had a feeling the card wouldn't live up to those claims, because in my experience, cards almost never do. So, how did it go for me? You can see for yourself by looking at the photos I've uploaded. The CrystalDiskMark6 tests come first: br> br>When the test files were 50MB and 1GB in size, the card nearly met the manufacturer's stated reading speed, then outperformed it on the second test, while the card excelled above the manufacturer's advertised writing speeds. Specifically, the card read speed was 147 during the Seq Q32T1 test. 2 megabytes per second and 166 megabytes per second 50MiB and 1GiB test files each received 1MB/s. The speed at which the data was written was 103. 4 megabytes per second and 104 megabytes per second 6MB/s for each of them! That surprised me because I didn't expect a card to live up to, let alone SURPASS, a manufacturer's claims.
NOTE: The results of the third CrystalDiskMark6 test are far less impressive. "What happened there?" you might wonder. ", you may well inquire. If you look closely, you'll notice that the test file size is 32GB in that case. GIGABYTES is a term used to describe the amount of data stored on a computer. The program's maximum test file size is 32GB, and it's maxed out at that point. Given the mechanics of microSD cards, the concepts of allocation unit size, and so on, it's no surprise that the card struggled with a 32GB test file. It's an unrealistic and pointless test that doesn't help convey any relevant information about the product; I only included it to show the full range of test results obtained from both extremes, as well as the average of the variables available for CrystalDiskMark6 users to change. The ATTO Disk Benchmark test results are the second item on the list. I've listed the transfer rate results for the card with test file sizes of 64MB, 128MB, and 256MB, all expressed in bytes, as well as the transfer rate results for the card with test file sizes of 64MB, 128MB, and 256MB expressed as inputs and outputs, all in bytes. We can see that the card, at its best, can consistently reach Read speeds of around 160MB/s, and, I'm happy to report, Write speeds of around 100MB/s Or, at the very least, very close to it. The point is that it's considerably faster than the manufacturer's claimed 90MB/s. br>br>Overall, I'm pleased. After putting the card through its paces and putting it to the test, I believe it meets or exceeds my expectations in terms of performance and capabilities. I've loaded about 600GB of data onto the cards so far, mostly music files, and it's all worked out perfectly. I haven't had any file corruption issues yet, and the product appears to be well-made. It also includes a free backup/recovery program, RescuePro Deluxe, which is a nice bonus. TAKE AWAY: br>br> If you require a microSD card with a capacity greater than 512GB and can afford the $450 price tag, BUY IT. br>br>You can keep an eye on this review because if I have any issues with the card in the future, I'll add a note at the bottom with my criticism as an "EDIT:.

Brooklyn Albert
Brooklyn Albert
| Dec 30, 2021
A Behemoth of Miniature Storage In my Galaxy S9, I replaced a 64GB memory with a similar brand but less powerful memory
5/5

br>At this point, my phone has more storage space than my two best laptops combined. Of course, I'll buy more, as you well know. br>br>Until now, this has been the holy grail of portable storage. My ThinkPad W530 workstation's SSD has less memory than this. my mind is blown When it comes to quality, SanDisk is unrivaled; they've been in the SD card business since the beginning. br>br>This tiny thing is so small that I could stuff it up my rear end after filling it with days' worth of videos and images. I doubt I'll ever require this much space, but it's nice to have the option. I'm a big fan of taking notes. This device effectively transformed my rudimentary cellphone into a supercomputer.

Ariel Michael
Ariel Michael
| Mar 28, 2021
On the Surface Pro 6, it's fast enough to use as additional storage, but not quite fast enough
3/5

Because the Surface Pro 6's built-in SSD disk space is so expensive, I think getting the smallest Surface Pro 6 and supplementing the built-in storage with a microSD card is a better option. br>The good news is that this card works well in the Surface Pro 6's microSD card reader (about 80 MB/s sequential read, 80 MB/s sequential write), even if it doesn't reach the advertised speeds (up to" 160 MB/s sequential read, 90 MB/s sequential write). br>As far as I can tell, the UHS-II is not compatible with the UHS-II. In any case, 1 standard is limited to 104 MB/s, and I'm not sure if faster microSD cards are available. br>In conclusion, a good option for the Surface Pro 6, albeit not the best.

Graysen Kent
Graysen Kent
| Jul 07, 2021

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