The Switch 2 ships with 256GB of internal storage, which sounds generous until you install two modern games. Cyberpunk 2077, Street Fighter 6, and other current ports eat tens of gigabytes each, and the eShop's best deals are digital. Sooner or later you'll need more space — and this is where the Switch 2 differs from its predecessor in a way that trips people up.
Regular microSD cards do not work
This is the big one. The original Switch used standard microSD cards, and drawers everywhere are full of them. The Switch 2 requires microSD Express — a newer standard that's much faster. A regular microSD card physically fits in the slot but the console won't use it for game storage. If you're upgrading from a Switch 1, your old card can't come with you.
What to buy
Look for cards explicitly labeled "microSD Express" — from reputable brands like Samsung, SanDisk, or Nintendo-licensed options. At launch, capacities of 256GB and 512GB are the sweet spot; 1TB Express cards exist but carry a heavy premium per gigabyte. Speed ratings matter less than the Express label itself, since the standard guarantees the baseline performance the console needs.
Compare microSD Express cards on Amazon ›
How much space do you actually need?
- Mostly physical games: 256GB extra is plenty — cards hold patches and DLC, not full games.
- Mostly digital, a dozen games: 512GB is the comfortable choice.
- Big digital library or sharing with family: consider 1TB, but check the price per gigabyte first.
Installation and gotchas
Installation is simple: power the console fully off (not sleep), open the kickstand to access the slot, and insert the card. The console will format it. Two things to know: first, cards formatted for the Switch 2 can't be read by a PC without reformatting, so don't plan to shuttle files around. Second, screenshots and videos can be stored on the card, which is handy if you capture a lot of clips.
One more tip: buy the card before you need it. Storage always seems optional until a 60GB download is staring at a full drive at 11pm before a trip. Prices on Express cards have been drifting downward — watch for dips rather than paying launch premiums.
Finally, beware of counterfeit cards from marketplace sellers: a fake card may report a large capacity but corrupt your data once you write past its real size. Buy from the brand's official store or a reputable retailer, test any new card with a full write-and-verify pass before trusting it with your library, and keep your receipt — legitimate cards carry multi-year warranties.