Console or handheld support
Engadget added the P9 Express to its Switch 2 tests in December 2025 and kept its advice that load-time differences between Express cards are hard to notice.
Samsung P9 Express microSD Express 256GB
A microSD Express card for Nintendo Switch 2. Engadget added it to its Switch 2 tests in December 2025 and found load-time differences between Express cards hard to notice.
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256GB microSD Express card, model MB-MK256T/AM
256GB microSD Express card, model MB-MK256T/AM
What works. What doesn't.
Speed
Samsung lists up to 800MB/s sequential read in SD Express mode and 90MB/s in UHS-I mode.
Capacity limits
Sold in 256GB and 512GB. Nintendo says Switch 2 supports microSD Express cards up to 2TB.
Installation
Nintendo says Switch 2 needs a system update over the internet the first time you use a microSD Express card.
Read the bigger picture.
Game storageBuying guide
Switch 2 needs a microSD Express card. The original Switch does not.
Switch 2 runs games only from microSD Express cards. The original Switch, OLED and Lite use ordinary UHS-I cards. Five cards matched to each console.