Designed for the Nintendo Switch 2 and other devices that use microSD Express, the 256GB P9 microSD Express Memory Card from Samsung features a storage capacity of 256GB and takes advantage of the PCIe 3.0 x 1 / NVMe 1.3 interface to support sequential read speeds of up to 800 MB/s. To help facilitate card usage in almost any environment, as well as keeping your content safe, this card is resistant to water, temperature, wear, drops, shocks, magnets, and x-rays. Thanks to an endurance (TBW) rating of up to 100TB, the P9 Express will have a long operational life.