Lexar® High-Performance 300x microSDHC/microSDXC UHS-I cards

300x up to 45MB/s

300x up to 45MB/s

300x up to 45MB/s

Product Highlights

  • Premium memory solution for tablets, sports camcorders, and smartphones
  • 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 300x (45MB/s)*
  • Stores up to 8 hours of HD video; 24,800 photos; or 14,200 songs**
  • Includes high-speed, Class 10 card and SD adapter
  • Limited lifetime warranty

Do more with your tablet, sports camcorder, or smartphone

Lexar® High-Performance 300x microSDHC™/microSDXC™ UHS-I cards 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. The cards leverage UHS-I technology to deliver high-speed, Class 10 performance up to 300x (45MB/s), and include an SD adapter for easy file transfer. These premium memory solutions give you the speed and space you need to enjoy more of your favorite multimedia on the go.

Enjoy faster capture, playback, and transfer of files

Do more with your multimedia.

Designed for use with your tablet, sports camcorder, or smartphone, Lexar High-Performance 300x microSDHC/microSDXC UHS-I cards make it easy to quickly capture, play back, and transfer all your favorite media files, including videos, the highest-quality movies, photos, and songs.

Get more from your device. 

 Speed rated at Class 10, High-Performance 300x microSDHC/microSDXC UHS-I cards leverage UHS-I technology to deliver a transfer speed up to 300x (45MB/s),* giving you the speed and space you need to enjoy more of your favorite multimedia on the go.

Enjoy HD video capture.

Whether you’re downloading and watching HD movies on your tablet or shooting adventure with sports camcorder, these high-speed, high-capacity cards allow you to quickly capture, play back, and transfer a large amount of the highest quality 1080p full-HD, 3D, and 4K video—making it easy to store up to 8 hours of your favorite movies or action video.**

Easily transfer files with included adapter. 

Cards also include an SD adapter to easily transfer files between your devices.

Rigorously tested. 

All Lexar product designs undergo extensive testing in the Lexar Quality Labs, facilities with more than 1,100 digital devices, to ensure performance, quality, compatibility, and reliability.

When memory matters, the choice is Lexar. 

With a long history in the industry, we know memory. We move quickly with technology to design the solutions you need, and work with device manufacturers to make sure our products are compatible. Then we stand behind them with outstanding warranties and helpful customer service. We’re dedicated to performance, reliability, and expert support, so when it comes to storing the memories that matter, trust Lexar.

*Up to 45MB/s read transfer, write speeds lower. Speeds based on internal testing. x=150KB/s.

**Based on 64GB capacity. 8-megapixel JPEG. 128-kbps MP3 audio. HD 1080p@24fps (5 Mbps). Actual number of photos, songs, and hours will vary depending on camera/device model, format resolution and compression, usable capacity, and bundled software.

Some of the listed storage capacity is used for formatting and other purposes and is not available for data storage. 1GB equals 1 billion bytes. For more information, go to www.lexar.com/capacity.

NOTE: Product appearance, software offerings, and packaging may vary depending on ship date and available inventory.


  • What is UHS?

    UHS stands for “Ultra High Speed” and refers to the new technology that enables higher bus interface speeds on Secure Digital High Capacity (SDHC) and Secure Digital Extended Capacity (SDXC) cards. UHS-I defines interface speeds up to 104MB/sec. A SDHC or SDXC card that supports “UHS” could have performance up to 104MB/sec.

  • What is the U1 Speed Class?

    Some of the new UHS memory cards may have a U1 marking, which refers to the U1 Speed Class designed for UHS-I card. The U1 Speed Class designates a minimum capture (write) performance of 10Mbytes per second for recording streaming video content. Note that although U1 is the same speed as Speed Class 10, they are tested differently, and meeting one does not imply that the other is met by the card.

  • Can I use an UHS-I card with a SDHC host device?

    Yes! All SD UHS-I cards can be used with all existing SDXC and SDHC devices (backwards compatible). Note that SDXC UHS-I cards are not compatible with SD or SDHC host devices, only with SDXC host devices. See the SDXC FAQ for more information.Although SD UHS-I cards can be used with all existing SDXC and SDHC devices, if you want to optimize UHS performance, select a device with the UHS-I logo:

    The chart below is a listing of SD host devices and memory cards that UHS-I cards support.

  • What host devices in the market support SD UHS-I?

    Fujifilm X-S1

    Fuji FinePix F600EXR

    Fuji Finepix Z900EXR

    FinePix F550FinePix HS20

    FinePix X 100

    FinePix F665XR

    FinePix F775XR

    FinePix HS30EXR

    FinePix Z1010EXR

    Olympus PEN E-P3

    Olympus PEN E-PL3

    Olympus PEN mini E-PM1

    Olympus PEN X10

    Sony SLT-A65V

    Sony SLT-A77V

    Sony α77Nikon 1 J1

    Nikon D7000

    Nikon D5100

    Nikon P500

  • What is the benefit of using a Lexar® UHS-I SD card?

    Lexar Professional memory cards accelerate the digital photography workflow. The Lexar Professional UHS-I cards deliver professional level, high speed performance and reliability, with minimum guaranteed speeds. Capture and store high-quality images and 1080p HD video, and transfer files faster to maximize workflow. Lexar UHS-I cards include Image Rescue® 4 software and come with a limited lifetime warranty. With Lexar UHS-I cards you can count on high-speed performance to maximize your digital photography workflow.

  • What is SDXC?

    SDXC™ (SD Extended Capacity) is an SD™ memory card format that is based on the SDA 3.0 specification. Today, SD and SDHC™ cards, which are based on the SDA 2.0 specification, can reach capacities up to 32GB. The SDA 3.0 specification, on the other hand, enables SD cards to “extend” beyond this 32GB capacity limit and reach higher capacities— more than 32GB, up to 2TB.  

    SDXC memory cards use the newer “exFAT” file system that is more efficient for SDXC card’s large capacities, while SD and SDHC memory cards use the FAT32 file
    system. This difference is the reason that the new SDXC format is NOT backwards compatible with host devices that only take SD (128MB to 2GB) or SDHC (4GB
    to 32GB) cards.

    PLEASE NOTE: Use of SDXC memory cards in non-SDXC compatible host devices may result in data loss, as the non-SDXC hosts do not understand the file system. Contact your device manufacturer for details.

    To ensure compatibility, look for the SDXC logo on both cards and host devices (cameras, camcorders, etc.).

  • What’s the best way to format my SDXC card? 

    Lexar recommends the use of the SD Formatter tool to correctly format SDXC cards (as opposed to the native OS formatting tools). Install the SD 4.0 formatter.

  • Can I use an SDXC memory card with an SDHC host device?

    No. SDXC cards are only compatible with devices that support the SDXC format. Refer to the chart below for a complete listing of SD host devices and the memory cards each supports. 


    Host device
    (ex. cameras, video camcorders, phones, readers, etc.)

    Memory cards supported







    SDXC cards and host devices:
    - SDXC memory cards can ONLY be used with SDXC host devices. Look for the SDXC logo on the host device to ensure compatibility.
    - SDXC memory cards will NOT work with SD/SDHC host devices.

    Host device compatibility with memory cards:
    - SDXC host devices can use and support SD, SDHC, and SDXC memory cards.
    - SDHC host devices can use and support both SD and SDHC memory cards.
    - SD host devices can only use and support SD memory cards.

    Note that the Lexar Multi-Card 25-in-1 USB 3.0 Reader is compatible with SDXC cards, provided that the PC operating system supports exFAT file format. 

  • What devices in the market today support the SDXC card format?

    The SDXC card format is widely supported by leading manufacturers, including Canon, Nikon, Olympus, Panasonic, Pentax, and Sony. Please check with each device manufacturer for specific camera model numbers. 

  • I’ve accidentally inserted my SDXC card into a PC or host device that does not support SDXC and reformatted the card. The SDXC card no longer works with SDXC host products. What can I do to return to the SDXC format?

    If you accidentally insert your SDXC card into a PC that does not support SDXC (using a direct SD slot or USB reader/writer), the following messages may appear:



    If you accidentally insert your SDXC memory card into an SDHC host product that is not compliant, the following messages may appear:


    © images by sdcard.org

    To return to the SDXC format on your card, please install the SD 4.0 formatter.


    For more information on SDXC, please visit the SD
    Association website: http://www.sdcard.org/consumers/sdxc_capabilities/