The 16 GB Class 4 microSDHC Flash Memory Card from Dell allows you to maximize storage capacity in mobile devices. It uses use the speed 'class' rating of Class 4 to offer a minimum data transfer rate of 4 MB/sec for optimum performance with devices that use microSDHC. This microSDHC (High Capacity) card is designed to comply with SD specification Version 2.00 and are recognized only by microSDHC host devices. It can also be used as full-size SDHC card when used with the included adapter. The 16 GB microSDHC Flash Memory Card is here to offer higher storage for more music, more videos, more pictures, and more games!