The Class 4 microSDHC flash memory card from Dell allows you to maximize storage capacity in mobile devices. It uses use the Class 4 speed rating to offer a high data transfer rate for optimum performance with devices, that use microSDHC. This microSDHC (high capacity) card is designed to comply with SD specification. The microSDHC flash memory card is here to offer higher storage for more music, more videos, more pictures, and more games!