Encyclopedia

SD Express

SD Express

An SD card category that uses the PCI Express (PCIe) and NVMe interfaces. Introduced in 2018, SDHD, SDXC and SDUC cards are available as SD Express cards, which are backward compatible with the myriad SD devices in use.

Over the PCIe bus, an SD Express card plugged into an SD Express host can reach up to 985 MB/sec, a 50% increase over the UHS-III bus in full-duplex mode. See SD card classes, SD card, PCI Express and NVMe.

microSD Express
Full-size SD Express cards did not take the world by storm, but the microSD version, which debuted in 2019, is expected to make a splash. Offering the same speed increase as SD Express, the microSD format is very popular and used in many devices. See microSD.


SD Express Logos
As time marches on, more Express logos will appear on cards. (Images courtesy of SD Association, www.sdcard.org)
Copyright © 1981-2025 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
Mentioned in
References in periodicals archive
The new format employs the NVMe 1.3 and PCIe 3.1 interfaces, similar to SD Express formatthat is used in PCs to power SSDs.
MWC 2019: SanDisk Extreme 1TB UHS-I microSD card, microSD Express format with faster data speeds announced
The SD Association has announced a new format called SD Express which boosts the maximum capacity of SD cards from 2TB to 128TB, Engadget reported.
The new SD Express format will theoretically allow you to store over 25,000 HD movies, 256 million photos, or 25.6 million songs.
Soon, store your entire media collection on a single SD card
The new card standard will be called SD Ultra-Capacity (SDUC) and will use a new speed standard called SD Express. While the challenge of making this card "relatively" affordable is a huge hurdle, there's also the potential challenge of compatibility.
New SD Card standard allows up to 128TB storage
SD Express handles content-distribution duties by cloning.
Solutions product guide
GSS SD Express allows teachers to add data to students' handheld computers.
GSS SD Express: Grant Street Software. (New Products)
"No-one knows whether that will produce a solution but the EFL has committed that it will contribute to the process wherever required." EFL involvement "The Trust and SD expressed understanding of the EFL's position but urged them to do all they can to bring about a solution to the problems facing the club to secure its long-term future in Coventry.
Sky Blue Trust met league bosses to discuss fans' fears
Sd expressed his pride in Natco's long-term partnership with Mercedes-Benz.
NATCO opens EGP 180m automotive facility
In that case SD expressed in mmHg is equal to 0.71 mmHg and the uncertainty (U) of proposed non-invasive absolute ICP measurement device is U = 2SD = [+ or -]1.42 mmHg.
Non-invasive absolute intracranial pressure measurement without problem of calibration: healthy volunteer study/Neinvazinis absoliutinio intrakranijinio slegio matavimo metodas: sveiku savanoriu studija
Copyright © 2003-2025 Farlex, Inc Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.