Transcend microSDXC 340S 256 GB Class 10 UHS-I U3 A2. The high-performance microSD 340S memory cards, compatible with the A2 speed class, feature excellent random read and write speeds to retrieve small data pieces from anywhere, thus reducing app launch times. The perfect solution for mobile storage. Mobile devices are becoming increasingly popular. However, their applications require high random read and write performance and often necessitate an expansion of regular storage. The microSDXC 340S memory cards meet the A2 specification, making them the right choice for smartphones, mobile gaming consoles, action cameras, and drones. Impressive transfer speeds. The microSDXC 340S memory cards comply with both UHS Speed Class 3 (U3) and UHS Video Speed Class 30 (V30) standards. Thanks to UHS-I technology, read and write speeds of up to 160 MB/s and 125 MB/s are possible. Ideal for 4K Ultra HD recordings and an enhanced gaming experience.