Double your Switch 2 storage. The Samsung 256GB microSD Express Card for Nintendo Switch 2 is the officially licensed Samsung-Nintendo storage expansion card that adds 256GB to the Nintendo Switch 2's built-in 256GB internal storage, bringing total available storage to 512GB for game downloads, updates, and save data. Designed specifically for the microSD Express slot in the Nintendo Switch 2 — a PCIe 3.1 NVMe-based storage interface that is fundamentally different from the standard microSD slot in the original Switch — the Samsung microSD Express delivers the access speeds required to load and run Nintendo Switch 2 games correctly.
The microSD Express format is not optional on Nintendo Switch 2 — it is required. Nintendo Switch 2 uses a new standard called microSD Express, which uses a PCIe 3.1 NVMe interface rather than the UHS-I electrical interface of standard microSD cards. Standard microSD cards — including the official Nintendo-branded cards sold for the original Switch and Switch OLED — are not compatible with Nintendo Switch 2. The Samsung 256GB microSD Express delivers up to 800MB/s sequential read speed, which is approximately eight times faster than the fastest standard microSD UHS-I cards and faster than typical SATA SSDs, giving the Switch 2 the storage access speed required to run its larger, more complex game titles smoothly from the card rather than only from internal storage.
Host Memory Buffer (HMB) uses a portion of the host device's DRAM to assist the card's controller in managing frequently accessed data — the technology that allows the microSD Express card to perform more consistently under the mixed-read workloads that game loading generates, rather than dropping to lower speeds during sustained access. Dynamic Thermal Guard (DTG) monitors the card's operating temperature and adjusts performance to prevent overheating and thermal throttling — the protection that maintains consistent performance across extended gaming sessions in portable use where the Switch 2 is closed in a case or used in warm environments.
The 6-proof durability specification covers water, temperature extremes, X-ray exposure (relevant for airport security scanners that every Switch 2 user will encounter), magnet resistance, drop shock, and wearout endurance. The Nintendo Edition design features a Super Mario branding with an all-red colourway — the officially licensed card design that identifies it as the Samsung-Nintendo co-branded product rather than Samsung's standard commercial microSD Express.
Samsung's 3-year limited warranty is longer than most competing microSD Express cards, which typically offer 1-year warranties. The card stores approximately 20–30 full digital Switch 2 games depending on title sizes. Compatible with Nintendo Switch 2 only — not compatible with original Nintendo Switch, Switch OLED, or Switch Lite.
