The type M is mostly the standard card; no frills storage.
The type H is a high speed version and is supposed be 2-3 times faster. It also apparently has a code that provides you with access to additional features in the Olympus Master imaging software.
The type H is a high speed version and is supposed be 2-3 times faster. It also apparently has a code that provides you with access to additional features in the Olympus Master imaging software.
