25
Adapter allows users to connect an M.2 NVMe SSD to a microSD Express card slot
(www.cnx-software.com)
this post was submitted on 10 Jun 2025
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There are UFS cards. They aren't as fast as SD Express cards, but 1200 MB/s is still plenty fast for a phone.
Why would anybody adopt a newer standard with no backwards compatibility and slower speeds?
They are still a lot faster than normal SD cards. I've never seen any phone that works with SD Express cards, but there were a few that worked with UFS cards.
If you are a phone manufacturer you can either choose MicroSD cards which are the most common and the cheapest, MicroSD Express Cards which are more expensive but faster and backwards compatible or UFS which nobody has ever heard of.