Designed for portable gaming devices, smartphones, and tablets, the 512GB PLAY UHS-I microSDXC Memory Card from Lexar offers up to 512GB of storage and delivers read speeds of up to 150 MB/s so you can achieve fast transfer speeds and quick load times for videos, movies, games, music, and other content. It is compatible with the UHS-I bus and features a speed class rating of V30 / U3, both of which guarantee minimum write speeds of 30 MB/s, making this card suitable to capture UHD 4K and Full HD 1080p video, plus still photos. If your device does not support the V30 or U3 standards, this card also supports the Class 10 standard, which guarantees minimum write speeds of 10 MB/s. To further accelerate mobile performance, this card is A2 rated, so apps and other content will load more quickly.