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Lexar High-Performance microSDXC 633x 64GB UHS-I/U1 w/USB 3.0 Reader Flash Memory Card - LSDMI64GBB1NL633R

4.3 out of 5 stars 533 customer reviews
| 55 answered questions

Price: $22.45 & FREE Shipping on orders over $49. Details
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64GB
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  • Premium memory solution for sports camcorders, tablets, and smartphones
  • Quickly captures, stores, plays back, and transfers media files, including 1080p full-HD, 3D, and 4K video
  • Leverages UHS-I technology for a transfer speed up to 633x (95MB/s) Read and (20MB/s) Write
  • Stores up to 8 hours of HD video; 24,800 photos; or 14,200 songs
  • Includes high-speed, Class 10 card and USB 3.0 reader
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  • Lexar High-Performance microSDXC 633x 64GB UHS-I/U1 w/USB 3.0 Reader Flash Memory Card - LSDMI64GBB1NL633R
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Size: 64GB
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This item: Lexar High-Performance microSDXC 633x 64GB UHS-I/U1 w/USB 3.0 Reader Flash Memory Card - LSDMI64GBB1NL633R
Customer Rating 4 out of 5 stars (533) 4 out of 5 stars (11346) 4 out of 5 stars (23939) 4 out of 5 stars (2095)
Price $22.45 $18.98 $9.99 $16.95
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Memory Storage Capacity 64 GB 64 GB 32 32
Secure Digital Association Speed Class class 10 class 10 class 10 class 10
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Product Description

Size: 64GB

Capture your adventures in HD. Designed for your sports camcorder, tablet, or smartphone, Lexar High-Performance microSDHC/microSDXC UHS-I cards (633x) make it easy to quickly capture play back, and transfer 1080p full-HD, 3D, and 4K video, as well as the highest-quality movies, photos, and songs. These high-capacity, Class 10 cards leverage UHS-I technology to deliver high-speed performance-up to 633x (95MB/s). The cards also come with a USB 3.0 reader for high-speed file transfer. These premium memory solutions give you the speed and space you need to capture more adventure on the go.

Product Information

Size:64GB

Technical Details

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Summary : Screen Size, Screen Resolution, Graphics Coprocessor, Graphics Card RAM
RAM 64 GB
Brand Name Lexar
Item model number LSDMI64GBB1NL633R
Hardware Platform PC, Mac
Item Weight 0.6 ounces
Product Dimensions 4 x 0.4 x 5.5 inches
Item Dimensions L x W x H 4 x 0.42 x 5.5 inches

Additional Information

ASIN B00XWPBBH6
Customer Reviews
4.3 out of 5 stars 533 customer reviews

4.3 out of 5 stars
Best Sellers Rank #40 in Computers & Accessories > Computer Accessories > Memory Cards > Micro SD Cards
#1,062 in Electronics > Cell Phones & Accessories
Shipping Weight 0.3 ounces (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available May 19, 2015

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
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From the Manufacturer


Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: 128GB
I had the opportunity to compare the performance of the fastest microsd cards currently available from top manufacturers. All cards mentioned in this review are obtained from Amazon during the last week or two except when noted otherwise.

Test Setup:
Lexar Professional workflow UR1 microsd card reader was used for all tests except when noted
CrystalDiskMark 5.0.2 x64 was used to produce all the test results and was set up with 2 passes and 100MB read/write size
All cards up to 32GB are formatted as FAT32 with 32KB allocation unit size, all 64GB cards are formatted exFAT with 128KB allocation unit size

Test Results (Numbers are Sequential Read, Sequential Write, 4K Random Read, 4K Random Write in MB/s, speeds greater than 10MB/s were rounded to the whole numbers)

16 GB Alphabetically
Lexar 633x** -- 88, 25, 8.7, 1.2
Panasonic U3** -- 93, 42, 11, 0.7
Sandisk Extreme Pro -- 95, 80, 7.6, 2.6

32 GB Alphabetically
Delkin U3 -- 93, 59, 11, 0.6
Kingston 90R/80W -- 93, 58, 11, 0.6
Lexar 1000x -- 90, 57, 10, 1.4
Lexar 1000x with Bundled Reader* -- 148, 60, 10, 1.4
Patriot EP -- 90, 35, 10, 0.6
PNY Turbo Performance -- 91, 55, 6.9, 0.9
PNY Elite Performance Lime Green -- 94, 55, 7.4, 1.0
Samsung Pro gray -- 92, 82, 10, 3.6
Sandisk Extreme Pro -- 94, 87, 9, 3.0
Sony up to 95MB/s -- 91, 51, 4.8, 0.9
Transcend Ultimate 633x -- 93, 85, 8.1, 1.4

64 GB Alphabetically
Delkin U3 -- 94, 27, 13, 0.3
Kingston 90R/80W -- 94, 25, 13, 0.3
Lexar 1000x -- 92, 56, 12, 1.5
Lexar 1000x with Bundled Reader* -- 153, 66, 11, 1.7
Patriot EP -- 81, 22, 11, 0.6
PNY Turbo Performance -- 92, 54, 6.9, 0.
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Size: 64GB Verified Purchase
the page states the the U3 and U1 are the same speed - that's wrong... shame on you lexar.. (you really should not lie to your customers) those cards are going back. i added pictures from the tests i performed...
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Size: 128GB Verified Purchase
Well, I was happy when my package arrived a couple days ago. For some unknown reason, this card committed suicide today. Read below for the full story:

I purchased this Lexar microSD (128GB) card to be used in my brand new Droid Turbo 2 phone. I've been quite busy the last couple of days transferring 5,331 songs, tons of digital photos and somewhere around 30 hours of video onto this card from my PC. Ended up being about 80GB worth of data when all was said and done. In an attempt to quicken these transfers, most of them were done using the USB 3.0 reader included with this card. Everything seemed to be working just fine although I was a bit concerned with how hot this card got during large transfers; but it wasn't anything that I considered 'out of the ordinary' as that's to be expected with high-speed flash memory. After returning the card to my phone, everything looked good. The phone registered this card as 119GB of total space and all of the data I transferred was found and accessible.

It was earlier today, as I was laboriously working at correctly categorizing the tons of songs I transferred, when my phone just hung for about 30 seconds or so. When I finally got it to respond again, I noticed that the microSD card appeared to be missing. When I went to the storage settings menu, all it said was that my card was unmounted and could safely be removed. The "Mount SD card" button was ghosted out although the "Erase SD card" button appear to be functional. At this point, I did a hard re-boot of my phone and it powered up with a microSD image displayed on the top display bar that had a message about the card being unmounted and removable. The storage settings were the same as before the reboot.
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3 Comments 36 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: 64GB Verified Purchase
As many other reviewers have commented, I ended up with a non-fixable "write-protected" micro sd card. My 64 gb is approx. 60 days old. I had great luck until about a week ago and then all of a sudden I couldn't save anything new to the card. I was able to view the items (files/pictures) on the card via the phone, view the items on the card in the card reader, view the items via my pc but unable to delete, make any changes or save anything new to the disk. I have tried every possible solution online from using the adapter and moving the "lock" position, reformatting via phone, reformatting via pc, reformatting via card reader (all unsuccessful as it is write-protected), going into my registry on my pc and editing the data value on the storage. Nothing works. Another reviewer suggested Lexar / Micron has incorporated some type of "save" feature that protects and rescues the data if the disk suspects a problem - so it write-protects the disk making the data untouchable but the disk also then unusable. I suppose a good feature in theory but very very frustrating. There should be some type of work-around.

I am going to try getting a replacement card from Amazon or Lexar/Micron ASAP. Once I (hopefully) receive a replacement disk, I plan on reformatting the disk to a "fat32" format as I've read this is a bit slower in data writing/transfer but much more stable and dependable and won't run into this issue of write-protection in the future. There appear to be free third-party applications out there that will do this for you with just a few clicks --- sounds pretty easy even for a novice such as me.

I am contacting Amazon for a solution - a possible replacement. Amazon has processed a replacement for me "as a valued customer and long time Prime member".
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