Lexar® Professional CFexpress™ Type B Card DIAMOND Series | Lexar

Lexar® Professional CFexpress™ Type B Card DIAMOND Series

Lexar® Professional CFexpress™ Type B Card DIAMOND Series

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up to 1900MB/s read, up to 1700MB/s write

up to 1900MB/s read, up to 1700MB/s write

Superior performance
Smooth 8K Video
Backwards Compatibility
VPG 400 video class


From field to post production, experience the unmatched performance of the Lexar® Professional CFexpress™ Type B Card DIAMOND Series. Designed to meet the demands of professional filmmakers and content creators, this card unleashes blazing fast speeds of up to 1900MB/s read, 1700MB/s write and min sustained write speed of 1600MB/s1 to capture smooth RAW 8K, 6K, 4K and beyond video with sustained performance.

The blazing-fast performance of the Lexar® Professional CFexpress™ Type B Card DIAMOND Series allows you to capture and transfer content quickly and efficiently. And with an industry-leading read transfer speed up to 1900MB/s1, you’ll quickly power through post-production and dramatically accelerate your workflow from start to finish.

Featuring PCIe Gen 3x2 and NVMe high-speed protocols, capture the highest quality RAW, ProRes, and 8K video with ease. And with write speed of up to 1700MB/s1, this card enables seamless and sustainable performance when content is written to the card. This card also supports VPG 400 specification for professional-quality video. This means the card’s been tested and guaranteed for professional video capture streams at a minimum guaranteed write speed of 400MB/s1 for compatible host devices and recording media.

For added versatility, Lexar® Professional CFexpress™ Type B DIAMOND Series is backwards compatible with select XQD® cameras2 enabling existing devices with next-generation performance.

The Lexar® Professional CFexpress™ Type B Card DIAMOND Series is built with the rugged durability you need to capture even in the harshest of conditions. The cards are designed to be shock and vibration-proof, and resistant to extreme temperatures*. And, for added peace of mind, the card is backed by a Lifetime Limited Warranty3.

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.



128GB / 256GB

Form Factor

CFexpress Type B


PCIe Gen3x2

Min sustained write speed



up to 1900MB/s read, up to 1700MB/s

Operating Temperature

-10° C ~ 70° C (14°F ~ 158°F)

Storage Temperature

-25° C ~ 85° C (-13°F ~ 185°F)

Dimension (LxWxH)

29.60 x 38.50 x 3.80 mm / 1.16” x 1.51” x 0.14”


7.65g / 0.016lbs


Lifetime limited warranty

1 Up to1900MB/s read transfer, write speeds lower. Speeds based on internal testing. Actual speed may vary depending on host device.
2 Compatible with firmware enabled CFexpress™ cameras
3 Limited lifetime warranty is limited to 10 years from purchase in Germany and regions not recognizing lifetime warranty
*Shock resistant (1500G, duration 0.5ms, Half Sine Wave) and vibration resistant (10~2000Hz, 1.5mm, 20G, 1 Oct/min, 30min/axis(X,Y,Z)). Based on internal testing. Actual performance may vary.
Temperature-proof: Withstands operating temperature range from 14ºF (-10ºC) or 158ºF (70 ºC) and non-operating temperatures from -13ºF (-25ºC) or 185ºF (85 ºC).
Warning: CFexpress™ Type B cards are only compatible with devices that support the CFexpress™ format. Highest transfer speed achieved only when used with a CFexpress™ Type B reader, indicated by a boxed USB logo on the product. Contact your device manufacturer for details.
Lexar is not liable for any loss of data or images.
[Product page only:] 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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