Silicon Power 4 GB microSDHC Class 4 Flash Memory Card with SD Adapter SP004GBSTH004V10-SP SDHC Class 4 compliant SDHC adapter included that can allow it be used as standard SDHC memory card Supports Content Protection for Recordable Media (CPRM) Security level complies with Secure Digital Music Initiative (SDMI) Compliant with RoHS requirement