Offload your camera roll in record time and transfer a 2-hour HD movie download in less than 3.5 seconds while using SanDisk PRO-READER SD Express Dual Card (sold separately) - up to 4.4 times faster than our fastest microSD™ UHS-I cards.

Try reading the page. Unless the SteamDeck contains a SanDisk PRO-READER SD Express Dual Card (it doesn't) it would likely read this proprietary microSD card at normal microSD speeds I would expect.

https://shop.sandisk.com/products/accessories/memory-card-readers/sandisk-pro-reader-sd-express-dual-card?sku=SDDR-A451-GNPNN

While eventually microSD cards will run that fast on future hardware. Generally existing hardware isn't forward compatible in that way.

Shame that it doesn't, these would actually be worth using.

This is why I have been recommending people interested in handheld pcs to wait until it's universally adopted. Currently none of them support it and I believe the new z2 and next gen intel handhelds won't either

The patient don't know remorse. Especially in the hardware space

Damn. Was just looking into buying one. Oh well

it is used for the switch 2. though that is all i know.

Originally posted by kaption:

https://shop.sandisk.com/en-ca/products/memory-cards/microsd-cards/sandisk-microsd-express-memory-card?sku=SDSQXFN-128G-GN4NN. Do these work on steam deck that be a very big upgrade for sure. Could that be to fast?

Who has tried one or has one for testing.

There is little advantage on a Steam Deck because the slot lacks the extra pins and NVMe interface on the slot.

Originally posted by andreasaspenberg575:

it is used for the switch 2. though that is all i know.

It is, i have a Switch 2 and a MicroSD express. It's nice, although at the moment the available sizes seem to be pretty limited to 128/256GB.

But in the same breath just like the Steam Deck, if you put MicroSD Express in an original recipe Switch, it'll just run at standard MicroSD speeds.