| RAM | 128 GB |
|---|
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- Covers new removeable flash memory device of any brand when purchased within 30 days (receipt must be retained for purchases not on the same transaction).
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Lexar High-Performance 633x 128GB microSDXC UHS-I Card with SD Adapter, C10, U3, V30, A1, Full-HD & 4K Video, Up To 100MB/s Read, for Smartphones, Tablets, and Action Cameras (LSDMI128BBNL633A)
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Purchase options and add-ons
| Brand | Lexar |
| Model Name | FBA_LSDMI128BBNL633A |
| Flash Memory Type | Micro SDXC |
| Memory Storage Capacity | 128 GB |
| Compatible Devices | Tablet, Camera, Smartphone |
About this item
- Premium memory solution for smartphones, tablets, or action cameras
- Quickly captures, plays back, and transfers media files, including 1080p full-HD, 3D, and 4K video
- Leverages UHS-I technology for a transfer speed up to 95MB/s
- Includes high-speed, Class 10 card and SD adapter
- Limited lifetime product support for card and one-year limited support for adapter
Frequently bought together

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This item Lexar High-Performance 633x 128GB microSDXC UHS-I Card with SD Adapter, C10, U3, V30, A1, Full-HD & 4K Video, Up To 100MB/s Read, for Smartphones, Tablets, and Action Cameras (LSDMI128BBNL633A) | Lexar Professional 1066x 128GB microSDXC UHS-I Card w/ SD Adapter, C10, U3, V30, A2, Full HD, 4K UHD, Up To 160MB/s Read, for Action Cameras, Drones, High-End Smartphones, Tablets (LMS1066128G-BNANU) | Amazon Basics Micro SDXC Memory Card with Full Size Adapter, A2, U3, Read Speed up to 100 MB/s, 128 GB, Black | SanDisk Extreme Plus microSDXC UHS-I Card with Adapter, 128GB, SDSQXBZ-128G-ANCMA | Lexar 128GB Micro SD Card, microSDXC UHS-I Flash Memory Card with Adapter - Up to 100MB/s, A1, U3, Class10, V30, High Speed TF Card | Samsung MicroSD EVO Plus Series 100MB/s (U3) Micro SDXC Memory Card with Adapter MB-MC128GA (128GB)… | |
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| Customer Rating | 4.6 out of 5 stars (12756) | 4.7 out of 5 stars (1936) | 4.7 out of 5 stars (48180) | 4.7 out of 5 stars (547) | 4.7 out of 5 stars (11414) | 4.6 out of 5 stars (66) |
| Price | $9.99$9.99 | $14.49$14.49 | $14.09$14.09 | $27.94$27.94 | $11.99$11.99 | $22.95$22.95 |
| Sold By | Amazon.com | Amazon.com | Amazon.com | Astral_Imaging (We Record Serial Numbers) | Longsys official store | #1 In Service |
| Computer Memory Size | 128 GB | 128 GB | 128 GB | 128 GB | 128 GB | 128.0 GB |
| Digital Storage Capacity | 128 GB | 128 GB | 128.0 GB | 128 GB | 128 GB | 128.0 GB |
| Flash Memory Type | Micro SDXC | Micro SDXC | Micro SDXC | Micro SDXC | Micro SDXC | Micro SDXC, Micro SD |
| Item Dimensions | 0.43 x 0.59 x 0.04 inches | 0.04 x 0.59 x 0.43 inches | 0.59 x 0.43 x 0.1 inches | 6 x 0.4 x 0.1 inches | 0.43 x 0.59 x 0.04 inches | — |
| Item Weight | 0.16 ounces | 0.20 ounces | 0.01 ounces | 0.60 ounces | 0.01 ounces | — |
| Memory Storage Capacity | 128 GB | 128 GB | 128 GB | 128 GB | 128.00 GB | 128.00 GB |
| Secure Digital Association Speed Class | Class 10 | Class 10 | Class 10 | Class 10 | Class 10 | Class 10 |
| Size | 128GB | 128GB | 128GB | — | 128GB | 128GB |
From the manufacturer
Lexar High-Performance 633x microSD UHS-I Cards
High-speed performance for your on-the-go content
Lexar High-Performance 633x microSDHC/microSDXC UHS-I Cards
High-speed performance for your on-the-go content
Designed for your smartphone, tablet, or action camera, Lexar High-Performance 633x microSDHC/microSDXC UHS-I cards let you
quickly capture, playback, and transfer 1080p Full-HD, 3D, and 4K video (1), 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 95MB/s (2). This premium memory solution includes an SD adapter and provides the speed and space you need to capture more adventure on the go.
- Premium memory solution for smartphones, tablets, or action cameras
- Quickly captures, plays back, and transfers media files, including Full-HD, 3D, and 4K video (1)
- Leverages UHS-I technology for a transfer speed up to 95MB/s (633x) (1)
- Includes high-speed, Class 10 card and SD adapter
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Capture adventures in HDMake the most of your adventures in the great outdoors by leveraging the power and performance of these cards. So, whether you’re shooting the action with your action camera or an aerial camera, you can quickly capture, playback, and transfer a large amount of the highest quality 1080p Full-HD, 3D, and 4K video (1) —making it easy to store your greatest moments and then relive the action. |
Do more with your multimediaGreat for use with your smartphone or tablet, the cards make it easy to quickly download or save all your favorite media files, including the highest-quality movies, photos, and songs. |
Get more from your deviceThe cards are speed rated at Class 10, and leverage UHS-I technology to deliver a transfer speed up to 95MB/s (2). These high-capacity cards give you the speed and space you need to capture, transfer, and share more adventures on the go. |
Easily transfer files with included adapterFor added functionality, the cards also include an SD adapter, making it easy to transfer files between your devices. |
(1) 4K video based on 64GB, 128GB, 256GB, and 512GB capacities only.
(2) Up to 95MB/s read transfer, write speeds lower. Speeds based on internal testing. Actual performance may vary. x=150KB/s.
Lexar is not liable for any loss of data or images.
Product appearance, performance, software offerings, and packaging may vary depending on ship date and available inventory.
Actual usable memory capacity may vary. 1GB equals 1 billion bytes.
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| 633x microSD UHS-I Card w/ Adapter | 1066x microSD UHS-I Card w/ Adapter | PLAY microSD UHS-I Card | |
| Ideal for | Mainstream photo/video enthusiasts, smartphones, tablets, action cams, drones users | Advanced/professional photo/video enthusiasts, smartphones, tablets, action cams, drones users | Users looking for large storage for media, entertainment content |
| Read Speed (Up To) | 100MB/s | 160MB/s | 150MB/s |
| Write Speed (Up To) | 45MBs (64GB ‒ 256GB), 70MB/s (512GB) | 70MBs (64GB), 120MB/s (128GB ‒ 512GB) | N/A |
| Interface | UHS-I | UHS-I | UHS-I |
| Speed Class | C10, U1/U3, V10/V30, (depending on capacity) | C10, U3, V30 | C10, U1, V10 (128GB) / C10, U3, V30 (25GB ‒ 1TB) |
| Video Recording | Full HD, 4K UHD (4K for 64GB and above) | Full HD, 4K UHD | Full HD |
| App Rating | A1 (32GB ‒ 256GB), A2 (512GB) | A2 | A1 (128GB ‒ 256GB), A2 (512GB ‒ 1TB) |
| Compatible With | Smartphones, tablets, cameras, drones, action cameras | Action cameras, drones, or high-end smartphones and tablets | Nintendo Switch, smartphone, tablet and portable gaming devices |
| Available Capacities | 32GB ‒ 512GB | 64GB ‒ 512GB | 128GB ‒ 1TB |
Looking for specific info?
Product Description
Designed for your smartphone, tablet, or action camera, Lexar High-Performance 633x microSDHC/microSDXC UHS-I cards let you quickly capture, playback, 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 100MB/s. This premium memory solution includes an SD adapter and provides the speed and space you need to capture more adventure on the go.
Product information
Technical Details
| Brand | Lexar |
|---|---|
| Series | FBA_LSDMI128BBNL633A |
| Item model number | LSDMI128BBNL633A |
| Item Weight | 0.16 ounces |
| Product Dimensions | 0.43 x 0.59 x 0.04 inches |
| Item Dimensions LxWxH | 0.43 x 0.59 x 0.04 inches |
| Color | black |
| Department | womens |
| Manufacturer | Lexar International |
| ASIN | B012PLSIJ6 |
| Country of Origin | China |
| Is Discontinued By Manufacturer | No |
| Date First Available | July 27, 2015 |
Additional Information
| Customer Reviews |
4.6 out of 5 stars |
|---|---|
| Best Sellers Rank | #282 in Micro SD Memory Cards |
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Top reviews
Top reviews from the United States
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I re-ran a Crystal DiskMark test after testing through some other cards, and was able to clock 98mb/s sequential read, as well as 51mb/s sequential write. We will see if these scores stabilize and become the norm. If so I will adjust my review to 5 stars, as those kinds of speeds is what I was expecting and why I purchased this card. More to come...
*ORIGINAL REVIEW*
I have a USB 3.2 UHS-II MicroSD card reader that I have benchmark tested quite a few MicroSD cards with, including this card:
(Lexar Performance UHS-I/U1/A1/V10/C10 32GB)
...and...
-Lexar Pro 667x (UHS-I/U3/A2/V30/C10) 128GB
-Samsung Evo Plus (UHS-I/U1/C10) 32GB
-Samsung Evo Select (UHS-I/U1/C10)32GB
-Sandisk Extreme (UHS-I/U3/A2/V30/C10) 64GB
-Kingston Canvas Select Plus(UHS-I/U1/A1/V10/C10) 32GB
All cards were tested in 4 ways, using 2 computers both with USB 3.2 Gen1(USB 3.1 Gen 1/USB 3.0) ports and using a USB 3.2 Gen 1 UHS-II card reader.
The tests are:
-Crystal Diskmark PEAK Performance test
-h2testw
-Actual 10-15gb file transfer
-Raspbian agnostics test
All cards performed for the most part as advertised. Originally I had my doubts regarding the SanDisk extreme, but it turns out the USB 3.0 UHS-I card reader I had maxed out at 95mb/s, which caused that to be my max read speeds and the card advertised much higher. After using this USB 3.2 MicroSD card reader, all cards tested within a close enough percentage error of their advertised speeds for me to be content...
EXCEPT for this Lexar Performance 633x. Compared to the advertised speeds, this card performed abysmally. It had a MAX Sequential read speed of 43 mb/s, which came in the CrystalDiskMark PEAK test, however the h2testw showed a sustained speed of 37mb/s. A real life file transfer gave results lower then that, but we can focus on the CDM and h2testw results for now. The sequential write speed in CDM ranged from 27mb/s on some tests, to 38 mb/s on another, and the h2testw sustained write speed was a whopping 16.7mb/s.
This card advertises 100mb/s read speeds and 45mb/s write. I am closer to the write speeds(in some tests,sometimes, not all tests, and not everytime. If i run CDM 3 times, only once did it hit 40mb/s. However, at the same time I am at 50% the advertised read speeds. I am unbelievably underwhelmed with this card. When it went on sale for $5 i snagged it because I have heard some good things about this series(633x) both personally and seen some good results online. And for that price, it was comparable to the Kingston Canvas Select Plus, and a ‘much better card’ allegedly. However, the Kingston Canvas Select Plus hits sequential reads at 98.36 on the same card reader in CDM! More then double the results of the Lexar 633x, however it writes at peak(which gives the absolute best results) at only 20mb/s. The sequential read performance of this card is simply unacceptable compared to advertised speeds, and for a card that is 2x the price of the Kingston it shouldnt hit half its sequential read speeds. I have seen results online where the advertised read speeds are hit with Lexars 633x, and I really dont believe my card to be a fake, it came in the same type of packaging as my Lexar Pro 667x, and I have to admit Lexar does a great job with Presentation of their cards...but I will be returning this for a replacement, hoping perhaps this was a defective card.
It also raises doubts in my mind, and makes me unsure if those higher results were using MicroSD Cards produces when Micron owned Lexar, as they are now owned by Longsys, a Chinese company. For comparison, the Lexar Professional 667x which advertises 100mb/s read and 90mb/s write, and is just the next series up in the Lexar family got within 3mb/s of their advertised speeds on average throughout my tests. IOPS were a bit lower then should have been for an A2 rated card, but im not sure a computer can properly judge IOPS, as its meant for phones and other handheld devices and is often dependent on both hardware and software to get a proper reading.
Top reviews from other countries
Entrega: super rápida
Produto: Original
Qualidade: Excelente
Testei com os programas CrystalDiskMark e H2testw, passou em todos os testes acima do esperado.
Comprei pra usar no 'Nintendo Switch OLED', funciona perfeito
Firstly, the storage capacity of 32GB is ample for my needs. It allows me to store a significant amount of data, including photos, videos, and documents, without worrying about running out of space. Whether I'm capturing high-resolution photos or recording lengthy videos, this memory card has proven to be spacious enough to accommodate my needs.
The 633x speed rating is another standout feature of this Lexar memory card. It delivers impressive read and write speeds, ensuring quick and seamless data transfers. Whether I'm transferring files from my camera to my computer or accessing files on my smartphone, the high-performance capabilities of this card ensure smooth operation and minimize wait times.
The included SD adapter is a convenient addition. It allows me to use this microSDHC card with devices that have an SD card slot, such as digital cameras or laptops. This versatility makes it a versatile storage solution for a wide range of devices.
Furthermore, the build quality is excellent. It feels sturdy and durable, giving me confidence that my data is well-protected. The card is also resistant to water, temperature variations, shock, and X-rays, providing additional peace of mind when using it in different environments.
One aspect that impressed me is the compatibility of this memory card. It works flawlessly with a variety of devices, including smartphones, tablets, action cameras, and drones. I appreciate the hassle-free experience of using the card across multiple devices without encountering any compatibility issues.
In terms of value for money, the Lexar Card with SD Adapter offers great bang for the buck. Considering its performance, storage capacity, and reliability, it provides a cost-effective solution for those seeking high-quality memory cards.

















