Designed for on-the-go users who are using action cameras drones and Android devices the 256GB Canvas Go! Plus UHS-I microSDXC Memory Card from Kingston features a storage capacity of 256GB and takes advantage of the UHS-I bus to support read speeds of up to 170 MB/s and write speeds of up to 90 MB/s. Plus card supports the V30 speed class which guarantees minimum write speeds of 30 MB/s. If your device does not support the V30 speed class this card also supports the U3 speed class which likewise guarantees minimum write speeds of 30 MB/s. If your device only supports the Class 10 standard minimum write speeds are guaranteed not to drop below 10 MB/s. Aside from support for UHS-I V30 and U3 Kingston also built this card with support for the Application Performance Class 2 (A2) spec which includes optimizations to give Android users an improved mobile experience delivering faster mobile app performance. The A2 spec allows the card to manage random read input-output access per second (IOPS) operations so it can quickly open apps and process accompanying tasks such as audio graphics saved profiles and in-app permissions. Built and tested to withstand harsh environments Kingston's 256GB Canvas Go! Plus UHS-I microSDXC Memory Card is protected against water shock vibration x-rays and temperature extremes. Additionally included is a microSD to SD adapter with a write protect switch allowing this card to be used in SD-compatible devices.